This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A beautifully eclectic mix of architectural styles.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Museum preserving torture methods from the past.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

Petrified footprints of one of the very first vertebrates to walk on land.

This single room has survived the centuries with almost no deterioration.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

Inside this art museum resides one of Glasgow's most famous musical instruments.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

The ornate structure is part of a building boasting more marble than the Vatican.

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

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

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

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

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

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

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.

These tiny effigies are believed to represent victims of Edinburgh’s notorious Anatomy Murders.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.