Holy Cross Church

Located behind the Słowacki Theatre, you may think this church looks bland on the outside, but the fact that the entrance is far below modern-day street level gives a hint that it's older than it looks: 14th century, to be precise. Inside, the unusual and amazing central pillar resembles a palm tree, with gothic ribs spreading across the vaults from the top. The late medieval frescos in the choir were restored by Wyspiański at the turn of the last century.