A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

San Francisco’s condensed garden of incredible plant growth.

An overlooked and unassuming engineering marvel.

California's most comprehensive horticultural library.

Sports history, made in the Arroyo Seco.

The remains of a ruined mansion memorialize the 1906 earthquake.

A mini-Stonehenge in the corner of the North Carolina state capitol grounds.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Amazing collection of over 2,000 live birds from around the world, many of which are rare or endangered.

One of the last functioning antique elevators in Chicago.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

Take a selfie with one of the area’s founding fathers.

An abandoned World War II bunker is part of a chain that runs throughout Washington.

Soak in the life’s work of one of the country’s foremost modern artists.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A winding staircase that appears to lead to nowhere is actually a diving platform into the Wellington Harbour.

In an Auckland neighborhood, looming chopsticks lift noodles from the sidewalk.

High winds can make this one scary landing.

The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

Limestone caves with spectacular showcase chambers.

This California museum is home to one of the largest collections related to the 'Treasure Island' author.

San Francisco's first World's Fair, dedicated to the wonders of California.

Home to one of the world’s largest collections of model yachts.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.