The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Xul Solar was an artist of alternate worlds, inventor of languages, and dreamer of utopias.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

A bright little alley in La Boca is a part of tango history.

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

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

A 125-meter long "tribute to the Brazilian people."

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

Handsomely crafted representations of our round planet.

The beautiful baroque library of the Hapsburg empire.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

The final resting place of the poets Shelley and Keats.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

The first American department store, and home to the largest operating musical instrument in the world.