Toukagakudo means Imperial Concert Hall, which is within the Tokyo Imperial Palace East Gardens and was completed in February 1966 to mark the 60th birthday of Empress Kojun.
Edo Castle is the flatland style Japanese Castle that forms part of the surroundings of the Tokyo Imperial Palace. Today there still remain some walls, moats, turrets and ramparts. Some of these are original and others are reconstructions. Edo Castle was built in 1457 by Ota Dokan in Chiyoda in the city of Edo, now known as Tokyo. The tenshu (keep or main tower) of Edo Castle, also known as Chiyoda Castle, was destroyed in 1657 by fire, with further damage being done in another fire in 1873. Edo Castle also suffered more damage from bombing during World War Two.