An ancient jungle temple carved into a rocky overhang of the Dane Soung Plateau.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A 125-meter long "tribute to the Brazilian people."

The little bear in the "funny kind of hat" has made his way from London back to Peru.

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

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

340 bicycles, 65 feet high.

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

A huge musical instrument played by the ocean.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.

The largest permanent Monopoly board makes one of the longest games even bigger.

A large instrument played by the wind.

A crumbling Beaux Arts monument to the Bay Area's age of rail.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

An abandoned convention space that has been left to the homeless and the radical.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

A giant can of fruit cocktail is all that remains of what was once the world's largest cannery.

From the Difference Engine to the Cray-1, all under one roof.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.