Callejon del Beso is one of Guanajuato’s most famous tourist attractions. It’s said couples should stand on the third step (helpfully painted in red) and kiss to enjoy a lifetime of luck in love. Such a cute place for picutures! Full story of the history on this website linked.
If you love a pretty theater, they give tours to check out the interiors and get a little background story on it. Its super pretty. Tickets can be purchased day of , walk ins are welcome. This is located right in the city center.