This iron building in the Amazon allegedly shares an architect with the Eiffel Tower.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

One of the largest trees of its kind in California.

North America's largest accredited model railroad museum.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

A spiritual vortex among the red rocks in Sedona.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

A reproduction of earth's many biomes.

This church on a Tohono O'Odham reservation has stood since 1797.

Legend says train robbers stashed their gold within the depths of this unusual cave.

What is the Thing?

This rural museum is home to more than 50 local desert reptiles and the world's largest snake bite kit collection.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

It's good luck to be mocked by this monkey.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

The largest geyser field in the southern hemisphere is a spectacular sight.

This 18th-century tower is locally iconic.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

The prehistoric home of an enormous ground sloth that once roamed Patagonia