See four top-secret US spy aircraft of the Cold War era, including the legendary SR-71 Blackbird and the A-12 Oxcart.

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

America's oldest Italian restaurant is a San Francisco institution.

In this century-old literary safehouse, print is alive and well.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

This painted marvel is San Francisco's 400-foot ode to urban biking.

Approximately 250,000 people left homeless by the great earthquake and fires found shelter in Golden Gate Park.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

These subterranean storage areas hold emergency water reserves.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

The only visible piece of San Francisco's most famous shipwreck.

An art supply shop holds the secrets of this quiet neighborhood's raucous Barbary Coast past.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

A free, public museum dedicated to the fascinating science of sight.

Over 315,000 preserved amphibians and reptiles in jars.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

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

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

The tallest stationary dunes on Earth also happen to sing.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.