An unusual manor of stunning beauty, born out of a crippling disease.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

One of Ireland's most infamous prisons for rebels including men, women and children.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

The ancient tomb acts as a calendar that keeps perfect time.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Regency-era excess on the English Coast.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

The oldest housing complex in Riga is a mini timeline of architectural trends.

Flamboyant architecture from the turn of 20th century.

These engineering masterpieces are a dominant feature of the Belfast skyline.

This giant sculpture made of trash is a critique of society's wastefulness.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

Inside this faux cave, visitors can learn how some of their favorite fantasy characters were created.

Elevated freight railway turned wildly successful urban park.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

Japanese national treasure originally built in 593 CE.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

The 10,000 Torii shrine.