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

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

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

This popular cave pool is truly magical, despite the crowds.

Take a dip beneath the stalactites in this amazing cenote.

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

Unusual rock formations eroded into a landscape of stone beasts.

Modern pyramids built to channel positive energy have also fomented local tales of animal sacrifice.

Moss-covered sculptures fill this small Brazilian gorge.

What killed this humpback whale is a mystery, but its remains have become legendary.

World's largest open air theater spans 24 acres and hosts a massive recreation of the Passion of Christ.

Striking ruins of a mansion that stood center stage in one of modern Brazil's most puzzling crimes.

The massive gardens and office of a Brazilian sculptor.

This striking, two-toned confluence of rivers is visible from space.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

High plateaus and beautiful waterfalls frame this ecologically significant nature preserve.

The ruins of this Brazilian island prison still bear the scars of the bloody rebellion that closed it down.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

The remains of a British railway rusting in the jungle mist of a Brazilian mountainside.

Site full of incredible prehistoric paintings and archeological findings.

The haunting peak of an old church is all that remains of a drowned Brazilian city.

These termites have an large and deadly abode—impressive by day, dazzling by night.