It's time to build nine of the most intriguing structures throughout history, Match runes to break blocks and uncover the lock and keystone for each round.It's time to build nine of the most intriguing structures throughout history, Match runes to break blocks and uncover the lock and keystone for each round.It's time to build nine of the most intriguing structures throughout history, Match runes to break blocks and uncover the lock and keystone for each round.