The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

The site of one of history's most indelible and horrific tragedies.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This impressive Boston holy house is the American mecca for Christian scientists.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

One of America's most historic homes also holds a startling literary legacy.

A unique attraction and museum dedicated to exploring iconic roadside structures.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Impossibly life-like natural history models created out of glass by a father and son.

This Massachusetts home was the first to have a telephone line and its own phone number: 1.

Bouncing, delightful, mechanical art at the MIT Museum.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

MIT students continue the legacy of beloved professor "Doc" Edgerton through learning by doing.

An enormous, inside-out glass globe built in 1935.

One of Ireland's most infamous prisons for rebels including men, women and children.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

A plaque memorializes the Boston location of one of the largest nightclub fires in history.