Wandering this ancient burial place offers a glimpse of the afterlife in the fresco-adorned tombs of an ancient Etruscan civilization.

The oldest stone house in Paris was built by its most famous alchemist.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

Denmark’s never-ending bridge.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

An architect transformed this abandoned cement factory into his castle-like workshop.

Blaxhall's burgeoning boulder can't help putting on a few extra stones.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

America's first public mental health facility.