This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

Visitors dip into a variety of pools of what was once ice.

Where beer lovers can literally immerse themselves in beer.

America's most famous piece of self-built architecture.

One man's homage to the sun continues to grow like a glass fractal.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

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

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."