A modern mechanical planetary system, part of a 10,000 year clock.

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

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

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

Olfactory delights in San Francisco's Botanical Gardens.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

The first integrated firehouse in Atlanta houses a museum on the history of desegregation in the city's fire department.

A local dive where religious kitsch, Southern identity, and queer culture collide.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

Secret gardens just a few miles from downtown Atlanta.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

A colorful square marks the heart of the city's LGBTQ community.

Scattered around Atlanta are little doors with big charm.

An underground magnet for ever-changing street art.

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

George Lucas donated this park to honor the birthplace of his two biggest movie franchises.

Frank Lloyd Wright died a year before construction on his largest public project even began.

Of all the origin stories for weed's secret code, this one likely has the goods.