Cologne, Germany
Groß St. Martin is a Romanesque Catholic church in Cologne's Old Town, rising prominently above the Rhine riverbank. Built primarily in the 12th and 13th centuries, it is one of the twelve Romanesque churches of Cologne and is recognised by its distinctive clover-leaf apse and massive crossing tower. The church hosts religious services as well as concerts and cultural events.
Underground tour of Cologne exploring historic baptistries and the church of Groß St. Martin.
A guided tour beneath Cologne's streets, uncovering the hidden history of Groß St. Martin church and the Roman Ubiermonument.