The Sento Palace at that time was called Sakura Machi Palace .
1817 ( Bunka 14 ) : Emperor Kokaku travelled in procession to Sento Imperial Palace , a palace of an abdicated emperor .
The palace   at that time was called Sakura Machi Palace .
1817 ( Bunka 14 ) : Emperor Kokaku travelled in procession to Sento Imperial Palace , a palace of an abdicated emperor .