A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

A flooded Mexican cave that hides a river beneath the water.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

This beautifully deceptive waterfall is something far different from what it appears to be.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

The winter home of millions of migrating monarch butterflies.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Roam the cradle of the Cuban Revolution with life-sized dinosaurs.

This communist country can still appreciate its fragrant past.

Neo-cave art on the macro scale.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.

A series of five defunct panopticon prisons in Cuba.

A Cuban artist reclaimed his impoverished neighborhood as a dreamy folk art kingdom.

Leave the wardrobes and sweets to British schoolchildren, Shanghai's got a Coke machine that leads to booze.

9,000 years of carnal history is on display at China's original Museum of Sex.

Beijing's expansive subterranean hiding spot now crumbles away as a tourist destination.

Rainbow-hued in the summer and crystalline in the winter, this salty lake has inspired battles, temples, and plenty of awe.

A museum at a Chinese university is the first of its kind in the country.

A labyrinth of clothing, electronics, and other counterfeit items.

This aquarium has almost as many world records as it does fish.

Natives of this mud-brick desert village use an ancient irrigation system to grow sweet, seedless grapes.