Related Clues:

• Projection to the east end of a church
• Semicircular or polygonal recess in 6 Down
• Semi-circular recess in church architecture
• Architectural feature that's an anagram of 'peas'
• Where the altar is found in a church
• Area with a half-dome
• It's an oversight not opening part of 8 across
• High altar neighbor
• Another pew seating elder initially in part of church
• Concha's place
• Domed or vaulted recess on a building
• Opportunity initially lost in part of church
• Satanists' leader breaks mirror in church recess
• Slip, cutting head in part of the church
• Heads for America — Palm Springs — enjoying recess