Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

Museum dedicated to the terror regimes of Hungary.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

Watch the ships come in on Michigan's 210 ft. high observation deck in Sault Ste. Marie.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

These tiny effigies are believed to represent victims of Edinburgh’s notorious Anatomy Murders.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

One of the oldest libraries in England, and one of the last of the great medieval chained collections.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This bronze statue was erected to honor a small Scottish town's beloved stray cat.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.