Otemachi Station sits at the epicentre of Japan's corporate and financial world. The surrounding blocks are dense with the headquarters of Japan's biggest banks, trading companies and financial institutions - the kind of buildings where serious decisions about the Japanese economy are made on a daily basis. On weekday mornings the station concourse fills with suited salarymen moving between offices with quiet efficiency. By Saturday, the neighbourhood is almost deserted, which makes it one of the easiest places in central Tokyo to walk around without crowds.
What surprises most visitors is how close all this corporate density sits to some of Tokyo's most historically significant public spaces. The Imperial Palace grounds are immediately to the west, and the East Gardens - where Edo Castle once stood - are a 5-minute walk and free to enter. The underground concourse connecting Otemachi directly to Tokyo Station without surfacing is one of the more useful practical details for navigating this part of the city.
Otemachi Station is one of the most connected in the entire Tokyo Metro network, served by five separate lines: the Marunouchi Line, Tozai Line, Chiyoda Line (all Tokyo Metro) and the Hanzomon Line (Tokyo Metro) and Mita Line (Toei). It opened in 1956 as part of the Marunouchi Line extension. The station is in Zone 1. Its five-line configuration means it is a very useful transit hub even if it is not your final destination - transfers here can save significant time compared to routing through busier stations.
The Marunouchi Line connects Otemachi west to Tokyo Station (1 minute), Ginza, Shinjuku and Ikebukuro. The Tozai Line runs east-west, connecting to Takadanobaba in the west and extending to Chiba Prefecture in the east - useful for reaching Nihombashi, Kayabacho and eastern suburbs. The Chiyoda Line runs north through Akihabara and Yushima toward Ayase, and south toward Hibiya and Omotesando. The Hanzomon Line heads west toward Shibuya and south-west toward Nagamachi, while also connecting east toward Sumiyoshi and Tobu lines into Saitama. The Mita Line (Toei) runs south toward Hibiya, Mita and Meguro.
Otemachi Station has an extensive underground concourse with multiple passageways connecting to the five line platforms and to Tokyo Station. The underground path to Tokyo Station takes around 5-8 minutes walking. Facilities include toilets, ATMs, Wi-Fi and a small selection of shops. Exits surface at multiple points around the Otemachi business district. Exit C13 is closest to the Imperial Palace East Gardens.
All five metro lines at Otemachi Station have lifts providing step-free access. The underground concourse is fully accessible. The surrounding streets at ground level are wide, flat and easy to navigate. The Imperial Palace East Gardens have accessible paths throughout.
Imperial Palace East Gardens - 5 min walk. The public gardens on the site of Edo Castle's inner keep. Free entry, open Tuesday to Sunday. Beautiful Japanese landscaping with historical ruins, ponds and walking paths.
Tokyo Station - 1 min by Marunouchi Line or 8 min walk underground. Japan's busiest railway station, with the restored 1914 red-brick station building as a historical landmark. Excellent food halls and the Kitte commercial complex alongside.
Imperial Palace Outer Gardens - 8 min walk. The broad plaza in front of the palace gate is open to the public and offers a rare open space in central Tokyo, with views of Nijubashi bridge and the palace grounds.
Kite Garden (Kitte Rooftop) - 10 min walk. The rooftop terrace of Kitte shopping complex gives a panoramic view directly over Tokyo Station's historic facade - one of the best free viewpoints in the area.
Tokyo Metro services at Otemachi run from approximately 05:00 to just after midnight. Weekday rush hours (08:00-09:30 and 17:30-19:00) are intensely busy with office workers. The station and surrounding area are noticeably quieter on weekends and public holidays - an ideal time to visit the Imperial Palace gardens. The gardens themselves close on Mondays and Fridays, so plan accordingly.
If you are heading to Imperial Palace East Gardens, Otemachi is your closest metro stop on the Marunouchi Line. It also gives easy access to Kiyomizudake ruins and Otemachi Financial City. Use the fare calculator to plan your journey cost before you travel.