The cathedral hill is the site of several of Frombork’s curiosities. Surrounded by walls, the 14C cathedral has around 20 altars, 101 funerary plaques and 19 epitaphs, including Copernicus’s memorial (he is buried here). In the old bishop’s palace, the Copernicus museum is dedicated to the great astronomer who lived in this town. Climb the Radziejowski tower to enjoy a breathtaking panorama over the Vistula lagoon.