Monte Compatri has been identified with the ancient Labicum, a colony of Alba Longa. In the Middle Ages it was a fief of the Counts of Tusculum, then of the Annibaldi, the Altemps and the Borghese.
Main sights
Parish church of Santa Maria Assunta in Cielo (1630–33), erected by will of Scipione Borghese. The campanile is the former communal tower. The façade was designed by Carlo Rainaldi