Lumbrein is home to several necropolis (ancient greek for city of the dead), elaborate cemeteries with tomb systems.
The Crestaulta and Cresta Petschna (a Bronze Age settlement), the necropolis at Surin and the double house at number 30 are listed as Swiss heritage sites of national significance. In the river Cresta Petschna, about 150 m (490 ft) from Crestaulta a cemetery or necropolis was discovered in 1947. The name stems from the Ancient Greek  nekropolis, literally meaning "city of the dead". A necropolis (plural necropolises, necropoles, necropoleis, necropoli) is a large, designed cemetery with elaborate tomb monuments. 
