The most decorated dog of World War I is preserved in the Smithsonian.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

There’s a special club house at the top for the bell ringers.

A dilapidated space station with overtones of 'Alien' and 'Bladerunner' featuring a multiplayer games galore.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

This 16th-century house tells the city's history through old artifacts and quirky tales.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

A book bound in the skin of an infamous criminal, along with countless other specimens.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The fountain marks the area where hundreds of accused witches were burned at the stake.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

At night, this memorial illuminates a ghostly outline of a footbridge that connected two sections of the Warsaw Ghetto.

The collection of a paranormal investigator who traveled the country collecting haunted items and stories.

The author of Frankenstein is buried here, along with her parents and the heart of her husband, the poet Percy Bysshe Shelley.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.