Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Drink wine handed out through a window as part of an age-old tradition.

Elevated freight railway turned wildly successful urban park.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

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

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

Amsterdam's Red Light District leaves little to the imagination.

Museum preserving torture methods from the past.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

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

Copenhagen's celebrated theme park and gardens.

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

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.