Spain
Sant Vicenç is a fine example of a Benedictine monastery which was partly demolished. Like Sant Pere you can't always get inside but the exterior is pretty enough with a rotund chapel containing the altar.
Praça de Sant Vicenç
Google map: tinyurl.com/ye66gdq
Sant Pere church is a Romanesque jewel with outstanding architecture and peace. You can't always get inside but the exterior is pretty enough with carvings and windows.
Praça de Sant Pere
Google map: tinyurl.com/ye66gdq