Temple: Idolatrous of the Calves, at Beth-El
Source: Nav
1 Kings 12:31, 33
Jeroboam also built shrines on the high places and appointed from every class of people priests who were not Levites. / On the fifteenth day of the eighth month, a month of his own choosing, Jeroboam offered sacrifices on the altar he had set up in Bethel. So he ordained a feast for the Israelites, offered sacrifices on the altar, and burned incense.