Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The largest and best-preserved rotunda in Prague.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

Spitfire airplanes with butterfly wings hover over Prague’s skyline.

A very classy 1920s-era bar right in Grand Central Station.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

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

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

An aptly-named street near the birthplace of the modern LGBT rights movement.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

Headquarters of the world's fourth largest Hasidic sect and the first of many "770s" around the world.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A museum dedicated to the history and exploration of both popular music and science fiction.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

The only quarter of the Old City not dedicated to a major world religion.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A bit of retro transportation flair preserved in the world's largest department store.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A sharp bend in a dramatic river canyon cut through red rocks.