One of only two commuter aerial tramways in the United States.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Macabre astrological automaton clock dating to the late 1400s.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

Famously misunderstood wonder of the ancient world

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

It houses the remains of a 17th-century version of the Titanic.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

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

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

Traditional 11th-century outdoor tannery.

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

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

The other side is actually green.

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