Elevated freight railway turned wildly successful urban park.

France's most famous cemetery, with some of its most curious tombs.

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

A terrific purveyor of natural history objects and curios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The artwork commemorates the many ways 20th-century people perished while on the clock.

The giant birds honor two native North American species.

This massive, ancient stone was disassembled and then put back together again.

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

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.

A floating cat sanctuary on an Amsterdam canal.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

This whimsical fountain pays tribute to Toronto's four-legged friends.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

An essential stop before plundering, BYO Cutlass.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.