This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Visit the monolithic tomb of America's most famous general.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

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

Mysterious 500-year-old tapestries depict a unicorn hunt.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The "Seinfeld" diner.

Elevated freight railway turned wildly successful urban park.

This pub has roots dating back to 1430.

One of London’s rare Tudor-era buildings is a fate-defying gatehouse for a church.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

This inn of the court provides a fascinating window into London’s legal and architectural history.

A small museum that celebrates the history and culture of the LGBTQ community in England.

At almost 1,000 years old, this is the oldest known door in all of Britain.

The medieval woodcut-style artwork chronicles life in medieval London.

The pockmarks across the building's facade are remnants of the Blitz.

A mysterious shape catches the eye in this 16th-century painting.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.