The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Few other hotels can rival the grandeur of the Castle in the Rockies.

At 207 feet, one of the world's longest continuous escalators.

One of the best places to see wild Colonial Spanish Mustangs in the United States.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

An impressive century-old, to-scale topographical map of Guatemala.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

Try not to get slimed in Tribeca.

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

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

Amid the marketing blitz of modern Times Square is an elegant holdover from its showbiz glory days.

The 28-foot granite map plots the locations of 40 theaters in New York City.

A dilapidated dock tells the story of Titanic’s missed arrival.

Elevated freight railway turned wildly successful urban park.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

This Transylvania County city is home to a rare white squirrel population that is descended from an escaped carnival animal.