St. Pantaleon's Church is one of Cologne's important Romanesque churches, with roots reaching back to the Ottonian period. Its westwork and heavy, early-medieval character make it feel very different from the vertical drama of the cathedral.
The church is best for travellers who like architecture and want to follow Cologne beyond the obvious Altstadt route. It is quieter than the riverside sights, and that quiet helps you notice the age and mass of the building.