These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

An early 20th-century bullring converted into a modern shopping center.

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

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

Construction of Barcelona’s iconic (but controversial) church was finally 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 histories of modern Chinese literature and anti-Japanese resistance collide in this Shanghai park.

A temple complex has existed on this site since the third century.

One of the largest, grandest imperial mausoleums was built as the founder of the Ming Dynasty's final resting place.

The home where the first Premier of the People's Republic of China worked and lived.

This once-booming oil city is now a relic of the region's industrial past.

The powerful party began with a secret meeting in this shikumen in 1921.

Home to around 40 different species, this forest was also the setting for "Crouching Tiger, Hidden Dragon."

An ancient fortification lives on in this Chinese city.

With former lives as a bomb shelter and government parking lot, this shop is one of China’s most extraordinary locales for book-lovers.

At 16,627 feet above sea level, this unstaffed station is the highest in the world.

This tunnel looks like a sliver of Shanghai that's stuck in the past.

The embalmed remains of the communist leader lie within a custom crystal coffin.

This ancient sword lay in a waterlogged tomb for 2,500 years, but managed to remain relatively untarnished and impressively sharp.

The western-most fortress on the Great Wall of China has gone from a strategic stronghold to a kitschy tourist carnival.

This massive neon wheel is the only one of its kind to be built over a bridge.