Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Swiss vineyards in a UNESCO heritage site.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

Founded as a refugee camp, now a popular tourist spot.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

This abandoned five-star hotel is now a five-star urban exploration destination.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

Houses are tucked between, on, and underneath giant boulders.

One of the most remote and isolated villages on the Arabian Peninsula.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

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

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

360° views of the city plus five floors of optical illusions and hands-on science.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

These Japanese gardens are blankets of light for dark winter nights.

A rare pod of derelict midcentury Futuro and Venturo houses lines a semi-abandoned beachfront resort outside Taipei.

This odd museum/art gallery embraces the physiological, zoological, and ethnographic side of sex.

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