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

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

The discovery of these rare, ancient artifacts led to the creation of a new museum.

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

A brightly colored natural bridge formed by mineral-rich hot springs high up in the Andes.

A cemetery dedicated to the mountaineers who perished climbing Mount Aconcagua.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

The narrowest house in Buenos Aires is less than 10 feet wide.

A mysterious architectural gem in one of the most elegant areas of Buenos Aires.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

A gateway to a mysterious network of underground tunnels.

This historic stadium was built to host the first-ever FIFA World Cup.

An epic sculpture depicting a wagon and straining oxen.

This beautiful example of neoclassical architecture is one of Uruguay's most treasured cultural gems.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

The remains of Uruguayan hero José Artigas lie beneath a monument in Montevideo’s main square.

The southernmost Anglican cathedral in the world has whale bones standing in its yard.

Where British troops serving on the remote islands paid tribute to their faraway hometowns.

This small island off the coast of Uruguay hosts the largest colony of sea lions and fur seals in the southern hemisphere.

The outside of this exposed Moche pyramid is covered with striking colorful adobe friezes.

Home to the deepest rift anywhere on Earth.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.