42°54′58″N 12°45′27″E / 42.9160°N 12.7575°E / 42.9160; 12.7575
Santo Stefano in Manciano is a medieval abbey, long abandoned, at Manciano (frazione of Trevi) in Umbria, Italy. Now only the ruined church, dating at the latest to the first half of the 13th century, remains.
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