
Guide
The Imperial Palace Outer Garden (Kokyo Gaien) is the site of the former Edo Castle and is now a vast public park open to everyone. Spanning approximately 1.7 km east-to-west and 2.2 km north-to-south, it serves as a symbolic landmark in the center of Tokyo. The landscape is defined by its historical stone walls, moats, and traditional Japanese aesthetics featuring black pine trees and lush lawns. It is a popular destination for both locals and tourists seeking a peaceful stroll or a moment of relaxation.
This area was once the western part of Edo Castle during the Edo period. Following the Meiji Restoration, the area underwent significant transformations to become the landmark seen today. During the Meiji era, extensive planting projects were undertaken, and by the Taisho era, the quintessential Japanese landscape of black pines and lawns had been established. In the early Showa era, further refinements were made to preserve the scenery while maintaining its function as a site for important national ceremonies. Notable structures, such as the Sakurada Gate, are designated as Important Cultural Properties of Japan.

The Imperial Palace Outer Garden is filled with elements that evoke a sense of history. The area around the Nijubashi Bridge is one of the most famous photographic spots. Other highlights include the Sakurada Gate, which retains the form of a 'Masugata' (box-shaped) gate typical of Edo-period fortifications, as well as the impressive stone walls and moats that reveal the layout of the former castle. The Wadakura area features a beautiful fountain system integrated into the landscape, and the Kusunoki area houses a statue of Kusunoki Masashige, adding a layer of historical depth to your visit.
The park is always open and is an excellent place for daytime strolls. If you visit the Wadakura area, you can enjoy the fountain displays during its operating hours (typically 10:00 AM to 9:00 PM), though schedules may vary. Some light-up events may occur after sunset. Please note that access to certain areas may be restricted during national ceremonies or high-security events, so checking the official schedule in advance is recommended.

With its vast grounds, the area is perfect for walking and relaxing. The Wadakura area includes information corners and rest areas for visitors. While walking is the primary activity, running is permitted only in designated areas (such as the light green-colored paths); running on standard sidewalks is prohibited. The area also serves as a hub for activities like the 'Palace Cycling' events held on certain Sundays.
The Imperial Palace is surrounded by many significant historical and cultural institutions. To the north, you will find the Nippon Budokan, the Science Museum, and the National Archives of Japan. To the south lies the vibrant Hibiya district. Many visitors pass through the Imperial Palace grounds when traveling between these major landmarks.

Please observe the following rules to ensure an enjoyable visit: