THESAURUS
holy of holies
adytum, ashram, cabinet, cell, cloister, closet, den, hermitage, hideaway, hideout, hiding place, ivory tower, lair, mew, privacy, recess, retreat, sacrarium, sanctuary, sanctum, sanctum sanctorum, secret place, the holy, the ineffable, the inenarrable, the inexpressible, the numinous, the unspeakable, the unutterable
ROGET THESAURUS
holy of holies
Temple
N
temple, place of worship, house of God, house of prayer, temple, cathedral, minster, church, kirk, chapel, meetinghouse, bethel, tabernacle, conventicle, basilica, fane, holy place, chantry, oratory, synagogue, mosque, marabout, pantheon, pagoda, joss house, dogobah, tope, kiosk, kiack, masjid, parsonage, rectory, vicarage, manse, deanery, glebe, Vatican, bishop's palace, Lambeth, altar, shrine, sanctuary, Holy of Holies, sanctum sanctorum, sacristy, sacrarium, communion table, holy table, Lord's table, table of the Lord, pyx, baptistery, font, piscina, stoup, aumbry, sedile, reredos, rood loft, rood screen, chancel, quire, choir, nave, aisle, transept, vestry, crypt, golgotha, calvary, Easter sepulcher, stall, pew, pulpit, ambo, lectern, reading desk, confessional, prothesis, credence, baldachin, baldacchino, apse, belfry, chapter house, presbytery, anxious-bench, anxious-seat, diaconicum, jube, mourner's bench, mourner's seat, cloisters, churchyard, monastery, priory, abbey, friary, convent, nunnery, cloister, claustral, cloistered, monastic, monasterial, conventual, ne vile fano, there's nothing ill can dwell in such a temple.