Prove your legitimacy to the throne by controlling castles, which you gain by controlling that castle’s domain. Place each castle token you control on your Gold Track, covering one space each, from right to left.

This represents the upkeep required to maintain the castle as your maximum gold can never exceed the number of open spaces on your track. If gaining a castle means you have too much gold, move your gold coin one space to the left. If you lose control of a castle domain, or decide to abandon it, either give the castle token to its new owner or return it to its domain (if no one owns it).