In a city of wooden houses, this watchtower was vital for early fire detection.

Norway's oldest cathedral still in use.

This floating sculpture of ice is a poignant reminder of nature's power.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

An art project designed to encourage people to explore and investigate their surroundings more closely

An opportunity to walk in the footsteps of Noble Peace Prize winners.

Step back in time at this 19th-century kiosk.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legend says this sacred tree was a gift from goddess Athena.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This Victorian water wheel is affectionately nicknamed "Little Isabella."

A 150-year-old steam locomotive crosses the southern half of the island daily.

World's largest working waterwheel has been around for over 150 years.

This hidden bridge is where local children leave gifts and messages for the island's fay folk.

An 800-year-old island castle in Guernsey's main harbor.

An intricately decorated tiny place of worship.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

Want to properly offend a king? Sculpt a giant hill figure in chalk of him riding out of town.

Giant naked man on a hillside.

A collection of old neon signs from all over Poland line a secluded courtyard.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.