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

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

These enlarged egg sculptures represent the native birds of eastern Iceland.

Cat art as far as the eye can see.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

A monument to the small town of master violin makers and its countless luthiers.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This headstone-like marker inscribed with three words has been an utter mystery for over a century.

Bronze plates placed around this Scottish fishing village form a true-scale model of the solar system.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

More than a century of radio history is told in these displays.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

The best place in New York to pick up the controversial, notoriously foul-smelling Asian "king of fruits."