A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

Catacombs turned marketplace.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

This hidden green space is the city's second largest conservatory.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

Eighty million natural history specimens call this gargantuan museum home.

A memorial in coal country commemorates the victims of an all-too-preventable mining disaster.

Wedged between two sets of row houses is an awkwardly located family graveyard.

This 1830s store is believed to be the site of Harriet Tubman's first stand.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

A genuine Tudor manor transported piece by piece from England.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

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

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

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