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

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

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

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

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

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

This small-town Connecticut restaurant gives each diner a free book from its vast library.

The intriguing personal collection of a professional demon-chaser.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

The tennis legend used this racket while breaking the race barrier and becoming the first Black man to win the US Open.

The first ever diner included on the National Register of Historic Places is famous for its custard French toast.

The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.

The first newspaper printed by an expeditionary force was published in this colonial mansion.

The home of the artist credited with introducing the tomato to the American diet.

The widow of Benjamin Franklin's brother became the first female newspaper editor in the United States.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

Enjoy egg rolls and live music in a converted bank vault.

Only a shrine remains at the site of the catastrophic nightclub inferno that killed 100 Great White fans.

This beach-side arcade is believed to be the oldest penny arcade in America.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

The only surviving fragment of the lost Narragansett Pier Casino.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

The secluded beach getaway from Wes Anderson's dreamy summer romance.