Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

A remarkable range of flora and fauna are represented in this Dominican nature preserve.

Largest pre-Lent festival in the Dominican Republic.

Columbus' failed colony in the New World.

The final resting place of Christopher Columbus - or possibly someone else.

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

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

In paradise, feral pigs have claimed an island all to themselves.

Massive volcano in the Andes is the farthest point from earth's center.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.

This historic square in Nepal is home to temples dating back to the third century.

Jumping-off point for a climb up Mt. Everest is the most dangerous airport in the world.

Last stop before the top of the highest peak in the world.

Sacred Buddhist home of some spiritual monkeys.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

A volcanic fissure over two miles long and up to 70 feet deep.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Only known mainland rookery of the threatened Stellar sea lion.

The longest continuous lava tube in Oregon.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

On the Oregon coast there is a natural hole that seems to be draining the sea.