This picturesque mansion has gone from opulent ruin to nature museum.

Known as the site of 'El Dorado,' this mysterious lake is rumored to hold gold beneath its waters.

Cathedral carved out of salt, located a mile below the Earth's surface.

A little known Colombian theme park of giant curiosities.

A celebration of Colombia’s premier contemporary artist.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

The world's first crowdfunded skyscraper has not gone quite to plan.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

Colombia's biggest botanical garden contains plants from all across the country.

Storied crypts fill the most famous cemetery in Colombia.

A small museum filled with unique fossil finds, including one of the oldest specimens of ground sloths found in Colombia.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The Laureates here get something even more coveted than a Nobel Prize: free parking for life.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

60 feet of towering steel balances gracefully.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

With beautiful views and every detail perfectly considered, one of the geniuses of modern architecture built himself the perfect home.

A bust of the entertainer and politician sits in an alcove at the Palm Springs Airport.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

Tucked away in Seward Park is Seattle’s only old-growth forest.

A sliver of nostalgia in Seattle's Viretta Park.