The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

New York's oldest and possibly grandest keeper of books.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

The first memorial dedicated solely to the Black troops who fought for the Union.

They sort through millions of dollars worth of diplomatic gifts on behalf of the government.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Unicorns, elephants, and bears, oh my!

This fairy tale-themed amusement park is now abandoned, and childhood metaphors abound.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

"Try not to knock anything over!"

This hidden labyrinth offers walkers some brief peace of mind.

Historic Hull Street was actually the first street with a proper name in the Boston area.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

35,000 grape hyacinths flow like water down a garden hill.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.