France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

It houses the remains of a 17th-century version of the Titanic.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Macabre astrological automaton clock dating to the late 1400s.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

More than 700 species live within this murky marvel of a swamp on California's coast.

Home to the "Circus" trees created by Axel Erlandson.

This 15th-century fortification was built to defend bunnies.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A remarkable medieval structure born from a 14th-century disaster.

Deep in the countryside lie the remains of one of the grandest Roman dwellings in Britain.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

Stonehenge has nothing on Castlerigg’s views.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

The largest greenhouse in the world is home to over one million types of plants.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

A fantastic castle rumored to be the birthplace of King Arthur.