The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

A unique workspace where offices reside on pirate ships and inside gingerbread houses.

Within this beautiful Pittsburgh cemetery, a unique headstone bears witness to one man's eternal love for Jaws.

This secluded walking trail is a hidden gem of a Pittsburgh park.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Warsaw's fantastically preserved gasworks...almost.

Electrical curiosity museum housed in an old transformer station.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The Titanic sails again in one Scotland man's backyard.

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

Anatomical cabinet holds unexpected treasures.

A vault of safe-deposit boxes in an old bank has been repurposed as a time capsule of Hispanic culture.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The final resting place of the great navigator, or maybe his brother.

A 16th-century Andalusian palace.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

This hidden 13th-century tavern room has a few Shakespearean connections.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.