Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Walk into the 19th century without leaving Brooklyn.

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

Electrical pylon in the shape of Disney's beloved mouse.

A vast array of tropical plants collected by a vacationing couple.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

Stolen goods adorn the organ at Old North Church.

The site of Paul Revere's historic two lantern warning.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

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

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

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

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.