The answer to the crossword for the term PART OF A CHAPEL is APSE. An APSE is a semicircular recess in the wall of a church, usually at the east end, containing the altar and often having a vaulted roof. It is a common feature in churches of many Christian denominations, including Roman Catholic, Eastern Orthodox, Anglican, Lutheran, and Methodist. The APSE is often used as a place of worship and contemplation, and is sometimes referred to as the 'SANCTUARY' or 'holy of holies'.