Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

A seasonal movie monster museum featuring wax creations by a relative of one of the original Universal Studios monsters.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The intriguing personal collection of a professional demon-chaser.

A wunderkammer hidden on the top floor of the Hartford statehouse.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

Memorial built in 1922 in remembrance of WWI casualties.

This tiny structure was built by the creator of the Brooklyn Bridge.

A historic grist mill and active sluice on the Black River.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

This Great Depression-era creation was once known as the strangest house in the world.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

An unassuming secret door once led to a legendary watering hole.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

More gold than anywhere else, ever.