Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

A museum in the former home of Marxist revolutionary Leon Trotsky.

A scientific repository of goiters, boils and other ailments throughout Mexican history.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

This extraordinary art museum is like a secret world on the edge of Mexico City.

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

A free, public museum dedicated to the fascinating science of sight.

A psychedelic labyrinth on the San Francisco bay.

Olfactory delights in San Francisco's Botanical Gardens.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

San Francisco's newly reopened hands-on science museum.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

The seamy, underground secrets of Portland's criminal past.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

Decades' worth of lost and forgotten objects make up the collection of this tantalizingly odd little museum.

This everlasting lightning storm may be the world's largest generator of ozone.

This "floating island" plateau sits 7,671 feet above the forest floor.

Ruins of the laboratory where a mysterious doctor invented an embalming fluid and stored his mummies.