The current Imperial Palace is located on the former site of Edo Castle, a large park area surrounded by moats and massive stone walls in the center of Tokyo, a short walk from Tokyo Station. It is the residence of Japan's Imperial Family. A popular photo spot is located in front of the beautiful Niju-bashi Bridge that stretches over the moat in the outer gardens near Tokyo Station. The inner palace grounds are not open to the public, except on January 2 and December 23, two days that commemorate the New Year and the Emperor's birthday. However, the Imperial East Gardens are open to the public, and stand at the foot of the hill where the foundation of the Edo Castle tower still remains. The gardens have a natural pond, with groomed trees and lush greenery.