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Santiago do Escoural, Portugal

Dolmen Chapel of Sao Brissos

A neolithic tomb converted into a tiny chapel. 

About 350 years ago this Neolithic dolmen was converted into a small Catholic Chapel known as Chapel of São Brissos Cromlech. Dolmens, sacred monuments made of standing stones capped with a top stone, appear throughout Western Europe, but rarely, if ever, have they been converted to new use in such a way.