The Palace is one of Tokyo's most popular attractions with thousands flocking to the beautiful gardens and parks where there are hours of exploring to be had. The gardens feature some magnificent cherry trees and plants from all over Japan. The garden is actually made from some of the inner enlcosures of the old castle. A limited number of visitors can tour the facility and much of the Palace is not open to the public. Bookings must be made in advance. You can find the link at the bottom of this page.

The Imperial Palace is the home of the Japanese Royal family, the palace also houses offices and staff for the numerous workers who keep the palace running including a large number of guards. Although much of the castle was run down and in disrepair, extensive damage was caused to the castle with bombing campains during the Second World War. The Imperial Palace was rebuilt in 1968 and is constructed from ferro-concrete. It houses many reception halls and the Emperors day office.

The Hyakunin is the biggest guard house on site and is open for inspection by visitors. You can enter through the Otemon Gate which is the main gate to the inner citadel in the Edo period.

On New Years Day and the Emperor's Birthday which is held in late December, the Royal family greet the public from the Kyuden Totei this is a huge event when thousands flock for the greetings. 

The East Gardens are opened to the public most days except Mondays, Fridays and some special occasions. Admission to East Gardens is free and there are several displays featuring the history of the palace set amongst the beautiful gardens.

 

The other gardens that are open to the public are the Kitanomaru Gardens, these gardens are much smaller than the East Gardens but do hold a science museum and the Japan Martial Arts Hall known as Budokan. The Kitanormaru Gardens are just to the north of the East Gardens. 

 

Imperial Palace tour booking link  http://sankan.kunaicho.go.jp/order/index_EN.html
For more information  http://www.kunaicho.go.jp/eindex.html