Next year an event is being held for the 1500 year anniversary of the relocation of the capital.
If you want to transition the capital to a new, better place, you need to move the capital. This used to happen a lot way back in Japanese history. It's actually pretty interesting so you might want to read up on it!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.