The remains of Crystal Palace Great Exhibition of 1851.

Catacombs turned marketplace.

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

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

This South London cemetery holds the remains of more than 15,000 people.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

One of the few remaining covered bridges in Lancaster County.

These hooded graves are the only of their kind in the United States.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

The first of Lancaster's "rural cemeteries."

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

Journey through a collection of over 35,000 Halloween items from all generations.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

Thousands of jack o'lanterns light up Halloween at this historic West Virginia home.

A small, forgotten prison cemetery marked only by a wrought-iron fence and eerie depressions left in the ground.

An overgrown garden stands as a grim marker of an unrealized dream.

Recorded as the first person buried in Arlington Cemetery.

The first national memorial to honor all women suffragists stands on land where suffragists were once imprisoned.

This unique structure is the only one of its kind in Virginia.