Related Clues:

• Notre Dame nooks
• Sites of some vaults
• Church parts, perhaps
• Vaulted church recesses
• Areas next to a great hall
• Some recesses
• Altar locales
• Choir neighbors
• Basilica areas
• Church aisle finishers
• Basilica recesses
• Choirs' neighbors
• Domed-roof structures
• Conic sections
• Mosaic spots in an abbey, perhaps