Cool down and fill up after visiting Teotihuacán at this bar and restaurant in a deep, underground cave.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Diego Rivera's massive tiled fountain and failed infrastructure project.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

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

A quirky and charming restaurant founded by artists.

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

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

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

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

These azure waters were thought to lead to the Mayan Underworld.

Part bookstore, part café, and part forest.

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

An Aztec snake god has taken the material form of an apartment complex.

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

A private Las Vegas horse ranch adorned with whimsical artwork.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

A collection of haunted objects and macabre oddities under one roof.

Temporary Burning Man sculpture made of two 18-wheelers.

Nevada's largest cactus collection stands outside a candy mogul's small factory.