Your First Visit to Shinjuku Sumitomo Building Sankaku Hiroba
Sankaku Hiroba is a fully enclosed, all-weather event space occupying the B2 and B1 floors of the Shinjuku Sumitomo Building in Nishi-Shinjuku, Tokyo. With a ceiling height of up to 25 meters, a floor area of 3,250 m², and capacity for up to 2,000 guests, it ranks among Japan’s largest indoor event venues. The space is equipped with a 564-inch 4K-compatible LED vision screen and full climate control, making it suitable for concerts, trade shows, fashion shows, large-scale corporate events, and product launches.
The venue connects underground to Exit A6 of Tochomae Station on the Toei Oedo Line, allowing visitors to arrive from the ticket gate without stepping outside — a rare advantage among large Tokyo venues. With Shinjuku Station just eight minutes on foot, Sankaku Hiroba sits within one of Tokyo’s best-connected transit hubs.
This guide covers practical information including how to get to Sankaku Hiroba, where to stay, dining options nearby, and tips for your visit.
Access Guide to Shinjuku Sumitomo Building Sankaku Hiroba
Sankaku Hiroba is directly connected underground to Tochomae Station on the Toei Oedo Line, giving it excellent access from across the Greater Tokyo area.
Nearest Stations and Exits for Shinjuku Sumitomo Building Sankaku Hiroba
Sankaku Hiroba is accessible from three stations: Tochomae Station, Nishi-Shinjuku Station, and Shinjuku Station.
Tochomae Station (Exit A6)
Exit the ticket gate and turn right immediately, then turn left right away onto the passage leading to Exit A6. About 50 meters ahead on the left is Exit A6, which connects directly into the Shinjuku Sumitomo Building, leading straight into the B1F Sankaku Hiroba.
Walking time: Directly connected, approx. 1 minute (access map)
Nishi-Shinjuku Station
From the ticket gate, head straight ahead past the corridor beside the Mizuho Bank ATM toward the Tokyo Metropolitan Government Building. About 30 meters ahead on the right, take the descending stairs with the green ceiling (Times Avenue), then continue straight for about 300 meters until you reach an open plaza. Continue past the corridor beside Exit E3, and enter the Shinjuku Sumitomo Building through Entrance C5 on the left, leading into the basement.
Walking time: Approx. 4 minutes (access map)
Shinjuku Station (West Exit)
Exit through the JR Shinjuku West Exit ticket gate into the West Exit underground plaza. With your back to the ticket gate, circle right around the rotunda, then walk about 300 meters through the underpass toward the Tokyo Metropolitan Government Building, passing in front of the “Shinjuku no Me” sculpture. Continue past Mode Gakuen Cocoon Tower and the Shinjuku Center Building, and after exiting the underpass, walk about 100 meters and take the stairs on your right up to Entrance 4 of the Shinjuku Sumitomo Building.
Walking time: Approx. 8 minutes (access map)
From Narita Airport
- Narita Express (N’EX) + Chuo Line Rapid: Narita Airport → Shinjuku Station (N’EX direct) → 8-minute walk. Approx. 85 min, approx. ¥3,300.
- Limousine Bus: Narita Airport (all terminals) → Busta Shinjuku (Tokyo Airport Transport) → 5-minute walk. Approx. 110 min, approx. ¥3,600. Travel time subject to expressway conditions.
From Haneda Airport
- Limousine Bus: Haneda Airport (all terminals) → Shinjuku Station West Exit (Tokyo Airport Transport) → 8-minute walk. Approx. 45 min, approx. ¥1,300.
- Tokyo Monorail + JR Yamanote Line: Haneda Airport Terminal 3 Station → Hamamatsucho Station → JR Yamanote Line → Shinjuku Station → 8-minute walk. Approx. 50 min, approx. ¥700.
Venue Information Summary
- Official Name: Shinjuku Sumitomo Building Sankaku Hiroba (新宿住友ビル三角広場)
- Address: Shinjuku Sumitomo Building B2/B1F, 2-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo
- Nearest Station: Tochomae Station, Exit A6 (Toei Oedo Line), directly connected
- Official Website: https://www.sumitomo-sankakuhiroba.jp/
- Hours & Inquiries: Please check the official website for the latest information.
Recommended Hotels Near Shinjuku Sumitomo Building Sankaku Hiroba
Sankaku Hiroba sits in Nishi-Shinjuku, one of Tokyo’s most hotel-dense districts, with major international brands within walking distance. Guests who prioritize step-free access via the underground venue entrance should look for hotels near Tochomae Station.
Hyatt Regency Tokyo
Adjacent to the Shinjuku Sumitomo Building, this large international hotel offers the closest walk among major Western-brand properties. Full-service facilities and multiple dining outlets make it a reliable base for multi-day event attendees.
Park Hyatt Tokyo
Occupying the upper floors of Shinjuku Park Tower, this ultra-luxury property is internationally recognized as the setting of the film Lost in Translation. Known for its art collection, high-floor views, and refined dining.
Hilton Tokyo
A large full-service hotel within walking distance of the venue. Well-equipped for banquets and large meetings, and well-suited for group bookings accompanying major events.
Keio Plaza Hotel Tokyo
A long-established large city hotel in Nishi-Shinjuku with a wide range of dining and banquet facilities. Conveniently located within walking distance of Shinjuku Station West Exit.
Daiwa Roynet Hotel Nishi-Shinjuku Premier
Opened in 2021, this well-regarded business hotel stands out for its breakfast options and modern amenities. A practical choice for business travelers seeking comfort at a mid-range price point.
▶ See more hotels near Shinjuku Sumitomo Bldg. Sankaku Hiroba (10 with photos)
Recommended Restaurants Near Shinjuku Sumitomo Building Sankaku Hiroba
Nishi-Shinjuku’s surrounding office towers house a wide range of dining options. From formal kaiseki to casual post-event drinks, here is a genre-by-genre selection.
High-End Japanese
Washoku-An
Located inside the Keio Plaza Hotel, this formal kaiseki and washoku restaurant offers private dining rooms suited for business entertainment and corporate dining.
Casual Japanese
Sakezen Honohomare Nishi-Shinjuku
A washoku-style izakaya on the basement floor of the Shinjuku Nomura Building. The menu is designed for group dining and post-event gatherings, with seating options for larger parties.
Western
HEARTH
A wood-fired Italian restaurant on the first floor of the Daiwa Roynet Hotel Nishi-Shinjuku Premier. Course menus are available at both lunch and dinner.
Asian
Korean Food Lucky Soul Nishi-Shinjuku
An authentic Korean restaurant on the second floor of Buresten Nishi-Shinjuku. Popular dishes include samgyeopsal and cheese dakgalbi.
Café
L.VERUS Tokyo -Cafe&Bar-
A café and bar on the fifth floor of the Toko Building in Nishi-Shinjuku. Open from breakfast through evening, with terrace seating available.
Bar
Bar Cocktailbook Shinjuku
A cocktail-specialist bar on the second floor of Plaza Nishi-Shinjuku. An extensive cocktail list and relaxed atmosphere make it a solid choice for a drink after the event.
Wi-Fi and Facilities at Shinjuku Sumitomo Sankaku Hiroba
- Wi-Fi: Wi-Fi equipment is provided. For reference, the wired internet connection is FLET’S Hikari Next Giga Family type (nominal max speed 1000Mbps; upgrades are at the user’s expense) (official PDF).
- Smoking Area: There is 1 smoking room on B1F (the smoking area for waiting rooms is on 1F, shared with users of the adjacent Shinjuku Sumitomo Hall) (official PDF).
- Hours & Extensions: Event space usage hours are in principle 0:00-24:00. Using the space earlier or later than the approved time requires prior approval, and an early-start/extension fee is charged separately on a case-by-case basis. The building entrance is open from 5:00 to 24:00 (official PDF).
- Parking: There is no hourly parking on-site; nearby parking facilities are recommended instead (official PDF).
- Loading and Unloading: Vehicle limit is under 4t (reference size under H4.0m x W2.4m x L9.5m, turntable diameter 6.0m). The loading elevator has an interior size of W6.0m x H3.0m x D4.0m with a W6.0m x H3.0m opening, located at the loading elevator on the 2nd floor facing Route 10 (vehicles cannot be left unattended). An advance loading notification or load-in/out schedule must be submitted at least 1 week before the use start date for bringing in exhibit items (official PDF).
- Accessibility: Priority restrooms (equivalent to multipurpose restrooms) are available, with 2 on 1F and 2 on B1F (official PDF).
Tips Before You Visit
Use Tochomae Station Exit A6 for Fully Covered Access
Exit A6 of Tochomae Station (Toei Oedo Line) connects directly to the Shinjuku Sumitomo Building underground, allowing visitors to reach the venue from the ticket gate without going outside. This is the only fully covered route and is especially useful in rainy weather or when carrying heavy luggage.
Check the Event Calendar Before You Arrive
When Sankaku Hiroba hosts a ticketed event, general public access to the space may be restricted. Always check the event calendar on the official website (sumitomo-sankakuhiroba.jp) before visiting.
Plan Ahead for Lunch on Weekdays
Between 12:00 and 13:00 on weekdays, nearby restaurants fill with workers from the surrounding office towers (Sumitomo, Nomura, Sompo Japan, and the Tokyo Metropolitan Government). Event attendees are advised to make reservations or adjust their dining time to avoid waits.
Ongoing Construction Near Shinjuku Central Park
Shinjuku Central Park, approximately three minutes on foot from Sankaku Hiroba, has been undergoing large-scale renovation work through 2025–2026. Some pedestrian routes through the park may be subject to temporary closures. Check current conditions if you plan to pass through the park.
Taxis Are Easiest to Catch at Shinjuku Station West Exit
Taxi stands in Nishi-Shinjuku are concentrated near Shinjuku Station West Exit. If you expect crowding after a large event, walking toward the station will give you a better chance of catching a taxi quickly.
Convenience Stores and Cash
The basement levels of the Shinjuku Sumitomo Building and neighboring towers have multiple convenience stores. For currency exchange, the Shinjuku Station area has several exchange counters and ATMs accessible to international visitors.
Event Spaces at Shinjuku Sumitomo Building Sankaku Hiroba
Sankaku Hiroba is configured as a single large-scale venue spanning the B2 and B1 floors of the Shinjuku Sumitomo Building.
Sankaku Hiroba (三角広場)
| Item | Details |
|---|---|
| Floor Area | 3,250 m² |
| Capacity | Up to 2,000 guests |
| Ceiling Height | Up to 25 m |
| LED Screen | 564-inch 4K-compatible |
| Facilities | Fully enclosed, air-conditioned |
Sankaku Hiroba was created through a full renovation of the Shinjuku Sumitomo Building’s atrium. The vast open space with a 25-meter ceiling, a 4K LED screen, and full climate control accommodates concerts, exhibitions, fashion shows, and large corporate events. For detailed layout options and usage terms, please refer to the official website.