Built for the 1962 World Cup, this fully functioning botanical clock is still ticking.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

What was once a unique system of urban elevators is turning into a mechanical ruin.

This sculpture meant to honor the bravery of the Indigenous Mapuche people of Chile proved controversial.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

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.

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.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.

Flamboyant architecture from the turn of 20th century.

3,000 market stands in five former Zeppelin hangars.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A miniature city, once ruled by the Queen of the Netherlands.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.