A monument celebrating the idea of reaching inaccessible places.

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

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

What better place to take a seat?

A strange history museum, with items accumulated by a pair of globe trotting spies.

A natural history museum with an extensive collection of bird dioramas.

A unique book shop with a collection of rare tomes and a nostalgia museum.

Every last book in this bookstore is signed by the author.

The humble home where the famous beat author lived briefly and wrote one of his most famous works.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Location of a reliquary containing bone fragments of 18 saints.

A building so large that it has its own weather.

An icon among Florida's pre-Disney tourist attractions.

Former wax museum from the 1960s, home to many wax U.S. Presidents and the famous White House miniature.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

Visit this playground of waterfalls, caves and sinkholes.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.