At the "Garage Mahal" in Houston, car culture is about more than just driving.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Natural catch-basin rocks covered in thousands of drawings spanning many millennia.

Search for traces of the dinosaurs that roamed here more than 90 million years ago.

The house's confection-like decorations are the result of one man's painstaking work over decades.

Henry Ford's failed rubber plantation in the middle of the Amazon rain forest.

Known as the "Finger of God," a dramatic rock formation resembles a divine hand extending towards the heavens.

This Brazilian palace island was once the site of the last grand ball before revolution.

The largest library in Latin America owes its existence to an Old World earthquake and a Napoleonic invasion.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.