The burial grounds of a secret society includes fences topped with fake Tesla balls.

A perfect replica of the beloved show's first set.

The first mountain submarine had its initial and last voyage in 1898.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

An inconspicuous footbridge beloved by San Diego locals.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

These two K-9 memorials commemorate the sister cities of Edinburgh and San Diego.

The Gaslamp District's oldest bar sports a urinal marked with a golden plaque that was allegedly used by Mick Jagger.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

This historic graveyard was partially paved over to create a streetcar line.

San Diego's most historic and haunted home.

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

See prehistoric footprints, plus two complete mastodon skeletons.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

A Ukrainian church canteen doles out hearty fare in an East Village basement.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.