[Detective Conan] National Diet Building – Clock Tower Skyscraper Tokyo, Tokyo

“The Clock Tower Building” in Detective Conan

The theatrical film “Detective Conan: The Clock Tower Building,” released in 1997 as the first film in the Conan movie series, remains a beloved work among many fans as the origin of Conan films. In the climactic scene of the final act of this memorable first film, featuring consecutive bombings by a mad bomber, the National Diet Building appears as an important stage.

In the film, the area surrounding the National Diet Building is depicted as part of the bombing trick set up by the culprit, and tense scenes unfold as Conan and his companions rush to solve the case. The appearance of the National Diet Building, a symbolic structure of Tokyo, visually emphasizes the scale and tension of the incident, creating a staging that gives the story a sense of gravity.

The actual National Diet Building is a representative piece of modern Japanese architecture completed in 1936 (Showa 11), and it currently functions as an active political facility serving as the deliberative chamber for both the House of Representatives and the House of Councillors. The majestic exterior depicted in the film can be seen in the same form when actually visited, making it a precious pilgrimage site where one can experience the world of the work.

Notable Features and Architectural Characteristics of the National Diet Building

The National Diet Building is a solemn structure covered with white granite, featuring bilateral symmetry. The central tower rising to a height of 65.5 meters at the center exerts a striking presence in Tokyo’s urban landscape. With the building’s overall width of approximately 206 meters and depth of approximately 98 meters, its grandeur can be felt even from a distance.

The architectural style is characterized by “Teikan-yō” (imperial crown style), a blend of Eastern and Western design that fuses Western modern architectural techniques with Japanese aesthetic sensibility, creating a unique style. The granite exterior walls were gathered from throughout Japan, testifying to the scale of the national undertaking at the time of construction.

There are multiple access routes. The most convenient is the “Nagatacho Station” on the Tokyo Metro Marunouchi, Chiyoda, and Nanboku lines, which is approximately a 3-minute walk from Exit 1. Additionally, the “National Diet Building Station” on the Tokyo Metro Marunouchi and Chiyoda lines is approximately a 1-minute walk from Exit 1, making it the nearest station by name. Both offer convenient access by subway, and access from the city center is excellent.

Important facilities such as the Prime Minister’s Official Residence, the Supreme Court, and the National Diet Library are clustered in the surrounding area, making it a location where one can view at a glance the center of Japan’s politics, judiciary, and legislature. There are many historically significant place names such as Sakurada Gate and Kasumigaseki, and simply strolling through the area allows one to feel modern and contemporary Japanese history.

Pilgrimage Tips: Photography Spots and Viewing Points

When visiting the National Diet Building, exterior photography is recommended first. Full-view photography from the front entrance side is the best spot, allowing you to capture the entire building including the central tower in photographs. Especially on clear days in the late morning, sunlight beautifully illuminates the building, and the white granite can be photographed to striking effect.

When photographing while recalling scenes from “The Clock Tower Building,” it is good to select angles that emphasize the building’s dignified appearance. Photographing from a slightly distant position with a telephoto lens allows you to recreate the powerful composition as depicted in the film.

Interior viewing of the National Diet Building is also possible. Guided tours are conducted by both the House of Councillors and the House of Representatives, where visitors can view the plenary chambers, the central hall, the central tower, and more. Both advance reservations and same-day sign-ups are available, with the House of Councillors tending to be relatively accessible for same-day viewing. During interior tours, you can observe the solemnity of the chambers and historical decorative items up close, experiencing firsthand the site of Japan’s democracy.

Regarding photography, exterior photography from outside the premises is generally permitted, but photography during interior tours is restricted. Additionally, as this is a heavily guarded area, always follow instructions and avoid suspicious behavior. Using tripods on surrounding roads or prolonged stays may result in security personnel addressing you, so exercise caution.

Depending on the season, the surrounding cherry blossoms and autumn foliage are also beautiful, and particularly during spring cherry blossom season, with Chidorigafuchi being nearby, you can enjoy flower viewing combined with pilgrimage sightseeing.

Basic Information

Address
〒100-0014 1-7-1 Nagatacho, Chiyoda Ward, Tokyo

Viewing Hours

• House of Councillors: Weekdays 9:00–16:00 (guided tours begin at the top of each hour)
• House of Representatives: Weekdays 8:00–17:00

※Viewing may not be available during Diet sessions or when ceremonies are held

Viewing Methods

• Advance reservations: Contact the House of Councillors Security Division Visitors’ Section or House of Representatives Security Division Visitors’ Section by phone or online reservation
• Same-day sign-ups: First-come, first-served at the House of Councillors Visitors’ Reception desk (limited capacity)
• Duration: Approximately 60 minutes
• Cost: Free

Nearest Stations

• Tokyo Metro Marunouchi/Chiyoda Line “National Diet Building Station” Exit 1, approximately 1-minute walk
• Tokyo Metro Marunouchi/Chiyoda/Nanboku Lines “Nagatacho Station” Exit 1, approximately 3-minute walk

Important Notes

• Photo identification may be required
• Security screening will be conducted
• Large baggage may be restricted from entry
• Dress appropriately and respectfully
• Photography during interior tours is restricted

Official Websites
House of Councillors: https://www.sangiin.go.jp/
House of Representatives: https://www.shugiin.go.jp/

The National Diet Building is a place worth visiting—for “Detective Conan” fans as the stage of a memorable first film, and for Japanese citizens as a symbol of democracy. Enjoy a special pilgrimage where you can recall scenes from the movie in its solemn atmosphere and experience Japan’s history and culture.