Terrifically morbid cemetary and site of famous Paracelsus' grave.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

A city built from mud and known as the "Manhattan of the desert."

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

This singular broken monument, now housed in a museum, was the cause of a worldwide "Mayan Doomsday" phenomenon.

A fiery crater has been burning in the Karakum Desert since 1971.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Dim sum, served in a grand old theater.

Beautiful steampunk ghosts of early Massachusetts.

Antique gaffe kept in the basement of a small Vermont natural history museum.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

Eco-friendly island mansion.

The mansion home of author Edith Wharton.

A wunderkammer hidden on the top floor of the Hartford statehouse.

Arlington Cemetery exhibit dedicated to death and grieving.

In the early 1800s, surgery was also a show.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.