A decommissioned Naval base now rents itself out for people who want to blow stuff up.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

The restored and active Victorian-era final resting place of San Francisco.

An overlooked and unassuming engineering marvel.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

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

These subterranean storage areas hold emergency water reserves.

Deco Modern sculptures of the people of the Pacific, cast for the 1939 Golden Gate International Exposition.

The miraculous hydrant that saved the Mission District in 1906.

Radioactivity still cause for concern at this urban explorer's paradise.