This golden temple is surrounded by hundreds of stone tablets that comprise the "world's largest book."

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

A monumental cross hides in the trees in Golden Gate Park.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

The remains of a 12th-century chapter house in Golden Gate Park.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

A monument to the love people have for their pets.

This turn of the century masterpiece has a mysterious goaty interloper.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

The remains of a ruined mansion memorialize the 1906 earthquake.

A hidden subterranean installation offers a view of the sky.

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

A 300-ship graveyard, with a few still visible at low tide.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Tiki luxury on Nob Hill.

An essential stop before plundering, BYO Cutlass.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

This shop specializes in oddities and Victorian-inspired wonders.

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