Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

Countless grotesque faces stare out from this eerie Prague art wall.

A church of bones, decorated with 40,000 human skeletons.

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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Mysterious rocks that ring musically when struck.

A 200-year-old collection of oddities and medical paraphernalia.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Protecting the dead from opportunistic body snatchers.

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

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

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