A surrealist timepiece by the artist of melting clocks.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Once one of the largest producers of pig iron in the world.

A unique book shop with a collection of rare tomes and a nostalgia museum.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Roman-era ships unearthed...

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

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

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

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.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

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

Go inside to really appreciate this 500-year-old technological masterpiece.

The only museum with its curator—and her pets—buried inside.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This angular brutalist playground turns playtime into modern art time.

Mai Tais and Navy Grog served up in one of the original tiki bars.

The world's first time capsule lies behind a welded steel door in Atlanta.

The beauty of urban decay, hiding some dark secrets.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

The bad-ass ride of a soul legend, housed in one of the world's few soul museums.