The burial place of some of Mexico's most prominent residents is full of macabre stories and hidden masonic symbols.

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

The winter home of millions of migrating monarch butterflies.

A uniquely robust and historic look at Mexico's omnipresent dance with Death.

This fantastical house shaped like a seashell brings aquatic design to architecture.

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

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

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

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

The famous artist couple lived and worked here, in two different houses separated by a bridge.

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

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

The first official clock in North America, it kept time for the Spanish government of Santo Domingo.

Built in 1512, the oldest cathedral in the Americas.

A collection cataloguing one of the most brutal dictatorships in modern history.

Collection of fossils, plants, and ancient animals encased in amber.

The largest masonic lodge in Cuba.

The enormous smoke hides within a little known, semi-secret exhibit inside Havana's Morro Castle Historic Park.

Cuba's historical trains remind natives of their country's sugary sweet past.

This communist country can still appreciate its fragrant past.

A nuclear power plant abandoned along with an international allegience.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

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

A focal point of the Cuban government, this city square features one of the most iconic images in the country.