Paths are maintained, but trees have taken over plots.

To find the "unicorns of the deep" you've got to go downstairs.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

This black shoreline is made up of exploded lava particles.

This legendary urban waterfall creates a dazzling display of rainbows.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

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

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

San Francisco's newly reopened hands-on science museum.

A beautiful geyser under environmental threat.

This whimsical garbage disposal facility receives around 12,000 accidental tourists each year.

A magical place that lets you play in and explore the world of Studio Ghibli.