St. Maria im Kapitol is one of Cologne's most important Romanesque churches, set on a site that once formed part of the Roman capitol temple precinct. Its trefoil choir, heavy stonework, and fragments of medieval art make it feel older and more grounded than many of the city's busier sights.
The church is a strong stop for anyone tracing Cologne beyond the cathedral. It sits close to the old town but is usually calmer, and the layered Roman, medieval, and postwar story is exactly the kind of Cologne history that rewards a slow walk between churches.