Definition: The Regia in Rome was a consecrated temple thought to have been built by the second king of Rome, Numa Pompilius. The Regia was the headquarters of the pontifex maximus. In the Regia were shrines of Mars and Ops Consivae. Only priests and vestal virgins could enter the shrine of Ops Consivae. The Regia burned at least twice, in 148 and 36 B.C. Nero's fire may also have burned the rebuilt Regia in A.D. 64.