A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The "Prussian Versailles" that is as glorious today as when it was built.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

This amazing 15th-century mural remained hidden in plain sight for centuries.

Built in the 1300s, this magnificent building that hosted England's kings and queens transports you to the Middle Ages.

The unbelievably opulent home built for an infamous newspaperman.

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