Comprehensive Guide: Mori No Hall 21

Last Verified Visit: 09 May 2026

Verdict: Mori no Hall 21 is a pleasant music hall with good sound and decent seating. But for a venue near Tokyo in Chiba, its access is poor, lacks amenities in the surrounding area, and requires a long walk from the nearest station. It really feels like a hall in the middle of a forest, and we’re glad they didn’t actually build 20 other halls here.

The Good

• Good venue acoustics
• Comfortable seat hardware

The Bad

• Long walk from nearest station that is largely unsheltered
• Limited train connections means that the time taken to get there can be substantial from the Tokyo area
• Barely any amenities around the area. Long walk to nearest food or convenience store

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Background#

The name might suggest that there are 20 other Mori no Halls in Chiba but that is not the case. The name comes from the park it’s residing next to: 21世紀の森と広場 (“21st Century Forest and Open Space”) which is why it ends up inheriting the 21 from that.

There will be a few reminders in this article, but Mori no Hall 21 has multiple facilities, among them, a smaller hall, a recording studio, meeting rooms etc. If your event is in one of those, some of the subsections may not be directly applicable. This guide primarily covers the ~2000 capacity large main hall.

Mori no Hall 21 can be considered a venue in Tokyo in the same vein that is “Tokyo DisneyLand is in Tokyo” and “Narita Airport is in Tokyo”. They’re all in Chiba, Chiba is technically not Tokyo, but sometimes people will treat them as one and the same due it being better for branding and train access blurring the lines between the main Tokyo area and the surrounding prefectures.

Basic Access#

You can come by train, but the alternative is to drive to this venue.

Driving is possible because there is parking at the venue itself and alternative parking nearby if that isn’t available. However, with only 127 lots in the carpark for this building, and a couple dozen more in the open air carpark nearby, it would turn into a giant mess if everyone decided to drive. Don’t consider on-site parking guaranteed, but parking somewhere <1km away and walking to the venue can still be a good option.

But if renting a car or hitching a ride with a friend isn’t an option, there’s the train. There’s the JR Shin-Yahashira station and right next to it, there’s Yabashira station. Shin-Yahashira has the Musashino Line and Yabashira has the Matsudo Line.

There is also bus access at the venue, the bus stop 森のホール２１公園中央口 has two available buses １４系統（京成バス千葉Ｗ）and １２系統（京成バス千葉Ｗ）.

Both buses start from Yabashira station bus stop and reach the hall in 2 stops, making it one of the possible ways of skipping the long walk.

14系統 also runs from Shin-Matsudo station and then goes towards Yabashira station bus stop. The stop for the hall is the 15th stop on its path. However, with Shin-Matsudo connecting to Yabashira station on the Musashino Line, there isn’t much incentive to take this route as mapping tools suggest its slower than taking the train and then taking the bus or walking from Shin-Yahashira.

Walking Routes#

There’s a few alternative routes from Shin-Yahashira/Yabashira station, and google will propose a few options, but here is in my opinion the most straightforward way that doesn’t require passing through a train crossing

Walking route from the train station.

1. Start from the main entrance to Shin-Yahashira or the south exit of Yabashira so that you’re facing the same road.
2. At the 3 way junction, you will see a 7/11. Don’t cross the road, instead continue around the corner, walking north down this road
3. Keep going down this road, you should see York Foods on the building across a large junction, that means you’re on track, cross that junction and continue down the street in the same direction.
4. After a long walk down Sakura-Dori Ave, you will come across a junction with guardrails as there’s a road passing under it.
5. Cross the first small road, but not the second, instead round the corner to your left and walk down the ramp. This should lead you under street level.
6. At the end of the path you’ll see a crossing on your right. Take this crossing and continue down the road in the same direction down the road.
7. Mori no Hall 21 will be on your right as you round the bend.

I’ve tried alternative walking routes on my way there and find that some of the small roads would require backtracking if you went the wrong way, which can be quite costly if you missed a turn. This route would be the most recommended for both arriving and leaving.

Seat Comfort#

First row seat in Mori no Hall 21

Seating in the main hall is comfortable, seats are typical music hall folding style seats with plenty of leg cushion so you can sit down for long periods and enjoy a musical, stage play or orchestra without much discomfort. I recall the seats having some velvety texture to the fabric cover, so cleanliness may be a concern with how these materials tend to trap dirt. (You can even see residue in my photo)

The seats do fold up, but there’s a bit of an uncommon feature. It won’t automatically fold up if you stand up, it needs a bit of encouragement to begin the closing process. Only after you’ve given the seat a nudge in the right direction does the folding mechanism actually kick in. This is either a bug or a feature depending on who you are. If you’re there for a concert style live show where you will be switching often between seating and standing, then this feature will annoy you. Otherwise if you’re attending an event where you’re going to be seated most of the time like a stage play or talk show, then this feature allows you to fidget or adjust your seating position without the inconvenience and noise of the chair closing on you, which makes it less distracting for other attendees.

Unfortunately I don’t have my usual seat test here, because the one show I attended here I got assigned row 1 of floor 1, which means there is no chair in front of me to assess average legroom. (A true first world problem, I know) A quick look around the venue gave me the impression that legroom is either average or slightly below average, as it felt like the chair extended quite far out and the seat to seat pitch was smaller than usual. This will need to be confirmed on subsequent visits if I return to this venue.

Layout & Views#

Seat map found at the venue

This venue is broken up into 3 levels, with the first level containing most of the seating. Most seats are front facing, but there are also catwalk side facing seat. It feels like regardless of where you are, you should be able to get a good view as the entire venue from the very first row is inclined. Catwalk style seating may be somewhat of a more awkward position, but since they are mostly single row, you at least won’t have to deal with obstructions in front of you.

Catwalk side seating is divided into L1/2/3/4 and R/1/2/3/4 blocks prefixed with the level number (eg 1-R4) and the only seats which I might consider extra awkward are the 1-L/R2 and L/R3 seats which are the only side seatings to have double rows.

Venue Acoustics#

Very good as it’s primarily a music hall. No echoing or unusual side effects, sound was all around good with no issues worth complaining about.

Being in the first row, there was no issue with being blasted by unpleasantly loud speaker volumes right in front of your face, so I think that all the elements required to have the hall sound good are there.

Facilities#

Coin Lockers#

Coin lockers are located on the 1st floor of the large hall. In practice since entry is done from Level 2, you will have to head up from the lobby then down again.

The coin lockers in this venue is a “free” coin locker where you deposit 100 yen to use it and it gets refunded to you when you collect your items.

I would not count on using the coin lockers in the venue at all, despite them being available. The reason for that is simple:

For the show I went to, coin lockers were blocked off.

This represents an operational risk for concert attendees, do you go to the venue and risk there being no coin lockers to use? As there are no alternatives in the surrounding area, I believe operating on the assumption that there won’t be coin lockers to use is the safer bet.

Toilets#

The outside toilet situation is tolerable but not exceptional. For the male toilet I recall the problem being only two stalls and six urinals. The urinals keep the main queue going fast, but the stall count means if you had any need for the toilet stalls you should deal with it first before coming to the venue.

The nearest alternative toilet is in the park, walk down the stairs and down the incline, you will see vending machines to your right. If you walk near the vending machines you’ll see the public toilet further behind. (Its marked on google maps as 21世紀の森と広場公衆トイレ) This walk is around 300m from the entrance to the venue to the toilet, though the stairs and the incline will make this feel like more of a distance than it is, especially on the return trip. This toilet was largely vacant when I was there, even during the golden week holidays.

There are also toilets in B2F at the carpark marked on the map, however I did not check these out during my visit there. My assumption is if you’re allowed to reach the carpark level, this could be a lesser known alternative.

The B1F toilet corresponds to the rehearsal room/studio room based on the map coloring so I’m not 100% confident that these will be always available. The other set of toilets is on 4F connected to the reception hall.

Main Hall Toilets

Toilets for the main hall are found on level 1 and level 3.

I did not use the toilets at 3F, but the 1F toilets I found to have a large quantity of urinals (10+), perfect for making that mid-show toilet dash. Though if you had an official break time I still wouldn’t want to be late to the bathroom as this still wouldn’t be enough toilets for all 1900 people to attempt to use them at the same time.

Food & Drink#

Vending machines are the only option for drink at the venue. No food is sold.

The nearest alternative vending machine is in the park, near the nearest public toilet.

Where to Eat Before the Show#

Forget about eating near the venue, there is almost nothing here.

The nearest food from the venue is actually a cafe in the park about 650m away. On the way there you may be lucky to see some food trucks, but this was probably because I was there during golden week and there was an abundance of families camping out in the park.

Cafe Terrace Prelude

Kake Udon from Cafe Terrace Prelude

This is the cafe located within the park itself. Take the stairs down into the park from the entrance of the venue, walk straight until the left side opens up, walk towards and around the body of water to reach this place. Ordering was a bit messy as the staff are scrambling between stations to make ice cream for the kids, but otherwise you can order some pretty basic food here.

The menu mostly covers curry rice, basic soba and udon alongside some snacks and deserts like the aforementioned ice cream. I would not consider this high quality gourmet by any standards, but for getting something before the show, it’s serviceable and beats going hungry.

Outdoor seating is also available, so check that even if it looks packed inside.

Exiting & Crowd Control#

There is basically no crowd control to speak of in a venue this small. You exit the venue and follow the stream of people heading back to the station.

I would not recommend using the bus to get back to the station since the frequency isn’t great and you could be stuck waiting for a few buses before you can get on.

Return trip advice: Don’t rely on google maps for trains, read the actual signs if you’re returning in the Tokyo direction. Sometimes Google Maps tells me the next train has Keiyo line through service when it doesn’t. Since train frequency late at night is not great, missing trains or taking the wrong one can be very costly.

Where to Eat After the Show#

I suggest grabbing food on the way back as there really isn’t anything around the venue. Head to the station and there are more options, with some closing at around 11pm or later.

If you’re staying in Tokyo, the limitation is less of last order timing, but more of last train timing. Be careful to not overstay and miss your returning train.

Where to Stay#

This isn’t exactly a venue that I’d recommend staying near to. If your entire trip was Chiba focused, I’d consider some classic Chiba hubs like Tsudanuma (accessible via Shin-Tsudanuma on the Matsudo line), but if you have any intention of doing other things in Tokyo, I would consider those locations first.

Some interesting ideas:

The Keiyo Line offers through-service to the Musashino line from Tokyo station, this makes picking something along that line somewhat appealing. (Personally I wouldn’t pick Tokyo Disneyland though)

One of the connecting stations being Shin-Kiba means that you can connect from the Rinkai line, opening up more options for places to stay.

Conclusion#

While I liked the hall itself quite a bit, and the seating does seem like it will be pleasant all around, the surrounding facilities and access woes leaves a lot to be desired. I’m sure you’ll be able to enjoy any show here no problem, but getting there and back feels more painful. Not having a convenience store or food place within 500m is definitely a lot more annoying than most venues.

Arriving closer to show time is recommended, but if you have multiple shows per day or socialization plans before a show and need to spend the whole day there, it is necessary to come prepared, as this is one of those venues that can catch you by surprise if you aren’t.

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