Kasumigaseki

Kasumigaseki is the administrative heart of Japan - the district where the national government operates, where ministries set policy, and where Japan's parliament, the National Diet, meets. The station's name is essentially shorthand for Japanese bureaucracy in the same way that Westminster or Capitol Hill function elsewhere. Walking above ground here on a weekday morning is unlike most of Tokyo: no retail, no restaurants on every corner, just the imposing facades of government buildings and suited officials moving between them with purpose.

For visitors, this area holds more interest than it might initially suggest. The National Diet Building - a striking 1936 pyramid-roofed structure - can be toured for free, and Hibiya Park directly adjacent to the station is Tokyo's oldest Western-style public park, a pleasant garden that has been here since 1903. The Imperial Hotel and Ginza are within easy walking distance to the east and south-east.

Station Overview

Kasumigaseki Station is served by three lines: the Marunouchi Line, Hibiya Line and Chiyoda Line (all Tokyo Metro). It opened in 1927 as part of the original Ginza Line extension - the Ginza Line was subsequently renamed the Marunouchi Line on this section. The station is in Zone 1. The three lines operate on separate platforms, connected by passageways within the station concourse.

Lines and Connectivity

The Marunouchi Line connects Kasumigaseki east to Ginza and Ikebukuro, and west to Akasaka-mitsuke and Shinjuku. The Hibiya Line runs north-east through Ginza, Nihombashi, Akihabara and Ueno, and south-west toward Roppongi, Ebisu and Naka-Meguro. The Chiyoda Line provides connections north toward Otemachi, Akihabara and Ayase, and south toward Hibiya and Omotesando. With three lines meeting here, Kasumigaseki is an efficient transfer point for central Tokyo journeys.

Station Layout and Facilities

The station has three sets of platforms on different levels, connected by stairways and lifts within a shared concourse. Exits surface at multiple points around the government district, with Exit A13 closest to Hibiya Park and Exit B2 toward the National Diet Building. Facilities include toilets, ATMs, Wi-Fi and an information board. The surrounding area above ground has limited convenience stores compared to most central Tokyo stations - plan accordingly.

Accessibility

Kasumigaseki Station has lifts to all three metro lines. The surrounding streets are wide and flat, well-suited to wheelchair users. Hibiya Park has accessible paths throughout. The National Diet Building can be accessed on guided tours that accommodate mobility needs.

Travel Tips

• The National Diet Building (Japan's parliament) offers free guided tours on weekdays when parliament is not in session - book through the official Diet website.
• Hibiya Park is one of central Tokyo's most pleasant lunchtime spots on weekdays, with rose gardens, a large pond and open lawns.
• The area is extremely quiet on weekends - if you want to walk around without crowds, Saturday or Sunday is ideal.
• Ginza's main shopping street is about a 10-minute walk south-east - easy to combine with a Kasumigaseki visit.
• The Supreme Court of Japan building (1974, Shin'ichi Okada) is a short walk south - an interesting piece of brutalist civic architecture.
• Use the Hibiya Line for quick connections to Ginza (2 minutes) and Roppongi (6 minutes).

Nearby Attractions

Hibiya Park - 2 min walk. Tokyo's first Western-style public park (1903), with formal gardens, a large pond, rose garden and open lawns. Free entry, open daily.

National Diet Building - 8 min walk. Japan's parliament building, built in 1936 with a distinctive stepped pyramid roof. Free guided tours on weekdays when parliament is not sitting.

Imperial Hotel Tokyo - 5 min walk east. One of Tokyo's most historic hotels, adjacent to Hibiya Park. The lobby bar is worth visiting even for non-guests.

Ginza - 10 min walk south-east. Tokyo's premier upscale shopping and dining district, with flagship stores from global brands and excellent galleries.

Timings and Best Time to Travel

Tokyo Metro services at Kasumigaseki run from approximately 05:00 to just after midnight. Rush hours on weekdays (08:00-09:30 and 17:30-19:00) are busy with government workers. The area is dramatically quieter on weekends - an advantage if you want to visit Hibiya Park or photograph the government buildings without crowds. The National Diet Building tours run on weekdays only.