Gosho
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Gosho (the imperial palace) is surrounded by a large public park (Kyoto Gyoen) with wide lanes for strolling, beautifully trimmed pine trees, and several park areas.
Notes
The north side has a grove where you can see beautiful cherry trees full of blossoms and enjoy a hanami drinking party in the spring chery blossom season. There are some days when you can take a tour of part of the palace grounds.
The imperial family lives in Tokyo normally, but they do occasionally visit and use Gosho.