The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

These curious caverns have been home to mushrooms, gangsters, and disco.

A museum within a museum, devoted to history's most questionable medical devices.

World's largest carved onyx figure stands as a tribute to enduring peace.

These grassy undulations on a stretch of University of Michigan campus aren't bad landscaping, they're art.

The city is full of whimsical portals to another world.

Trade in that pesky human soul for cold-hard circuits.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

Largest magic museum in the United States with more than half a million pieces of memorabilia.

This experiment in the lifespan of seeds will take a century before it is complete.

Island wonderland for communist autocrats.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A former French military respite turned jungle tourism hotspot.