• Astronomical clock show runs once a day at 11:57am inside the basilica, so plan the tower around it
• Closed in storms, since the tower shuts to visitors in bad weather, so check the sky before you go
• No visits during Mass inside the basilica, so check the parish Mass times, especially from June to August

The brick bell tower of St. Mary's Basilica rises 78 m over the Main Town, and its viewing point at the top looks out across the Old Town rooftops and spires.

The basilica below, finished in 1502, is one of the largest brick churches ever built. Inside, the astronomical clock Hans Düringer made in 1464-1470 runs its show of moving figures once a day.