An ancient glacial pothole waterfall in the heart of the Green Mountains.

This "common-as-dirt" museum celebrates the glory of normalcy.

The "original web site," this farm in Northern Vermont encourages orb-weaver spiders to build their daily webs, and then sells the preserved masterpieces.

These mysterious petroglyphs in Vermont reflect a troubled history in the treatment of Native American culture.

Beautiful hillside Vermont cemetery with amazing funerary art.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

A functioning Roman-era aqueduct and bridge in rural southwest France.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

15,000 year old bison sculptures.

One of the shortest streets in York has an especially odd name.

Follow the original medieval paths that wind through this intriguing section of the city.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

An intact, still operating pharmacy from the 18th-century filled with numerous artifacts and paintings.

This Renaissance square was at the center of Leonardo da Vinci's map, the first ichnographic ever.

This castle was once the home of one of the most powerful women of the Renaissance.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

The ruins of an ancient Celtiberian town with incredible rock-cut buildings and a Roman aqueduct.

The ancient tomb acts as a calendar that keeps perfect time.

This Neolithic passage tomb forms part of a World Heritage Site.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The world's oldest optical museum is an odd collection where the exhibits look at you.