Countless stories attempt to explain Poland's mysterious J-shaped trees.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

These subterranean models show Mexico City's central square during three different eras.

This graveyard boasts a medley of diverse and imaginative funeral architecture.

Take a dip beneath the stalactites in this amazing cenote.

The museum houses "the most studied meteorite in history," among other geological oddities.

This old-school café is famous for serving coffee, chilaquiles, and the Cuban Revolution.

Mexico City decorates its facades with extravagant floral arrangements every year.

A bullet-scarred monastery chronicles Mexico's turbulent history of foreign invasions.

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

Inside a busy metro station, an impressive mural depicts the prehispanic city of Tenochtitlán.

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

These strikingly colorful paintings were created by a mysterious Mesoamerican civilization.

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

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

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

A lake at the bottom of the ocean.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

This crumbling Art Deco movie palace in Mexico City has been abandoned for two decades.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

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.