Gold Rush-era tombstones line the park's paths.

Visible below the waves are memorials to the city's Gold Rush dead.

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

Tiki luxury on Nob Hill.

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

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.

This 19th-century church is now a popular roller rink.

A former hardware store near Yerba Buena is the official home of California's history.

The world's first interactive human body museum also serves as a chair for a giant orange man.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

A temple to modernity, tucked away amid Barcelona's more well known museums.

A gigantic sculpture garden is packed with innovative oddities.

A desert that evokes the surreal.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

Roots and stumps that lay inundated for two millennia are on display in Japan's city of three mysteries.

Double spiral staircases are not unheard of, but they are very rare.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Two thirds of this Montreal neon icon has survived to flash another day.

Fans of the spicy bright-red sauce can tour where it's made.

This Toronto garden collects stares and tchotchkes in equal measure.

A national collection of Communist-era musical posters.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.