Mineral springs believed to hold therapeutic properties draw in visitors from all over.

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

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Take a dip beneath the stalactites in this amazing cenote.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

Frida Kahlo's childhood home, now a museum of her life and works.

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 Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A celebration of capitalism in Midtown.