Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.

Squeezing inside this deep, narrow canyon reveals a festival of desert colors.

Notorious artist squat renovated into legal studios.

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

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

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

With former lives as a bomb shelter and government parking lot, this shop is one of China’s most extraordinary locales for book-lovers.

This under-visited temple is nestled within one of Shanghai's traditional shikumen-style residential blocks.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Elevated freight railway turned wildly successful urban park.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

The metal leaves on this tree are engraved with the names of Holocaust victims.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This French colonial post office is arguably the grandest in all of Southeast Asia.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.