Stockton, CA
Built 1942 as Stockton Field — primary Army Air Forces flight school training pilots for the Pacific theater. Some 4,000 cadets earned wings on these runways. After WWII, hosted SAC bomber operations until the 1960s. Today a busy Class D reliever with a 10,650ft runway that handles charters of any size. The annual San Joaquin AgFest brings county air shows back to the field each spring.
Rising alone out of the flat east of San Francisco Bay, Mount Diablo punches far above its 3,849 feet because nothing around it competes — on a clear day the summit sees over 100 miles, reportedly across 40,000 square miles, one of the largest viewsheds of any peak on Earth. That visibility made it a survey datum: in 1851 the summit was chosen as the Initial Point of the Mount Diablo Meridian, and to this day nearly every property line in northern California and all of Nevada is measured from this one mountaintop. The CCC-built summit building holds the survey marker and a small museum. The aviation hook: the summit beacon, built in 1928 to guide airmail and commercial pilots and visible for 100 miles, was first lit by Charles Lindbergh — and is still lit once a year, every December 7th, for Pearl Harbor Day.
You can land at Columbia Airport and walk straight into 1852. Columbia is the best-preserved Gold Rush town in California — a National Historic Landmark District where roughly $4.7 billion in today's dollars came out of the ground, briefly making it one of the state's largest cities. Where most boomtowns burned or rotted away, Columbia rebuilt in brick after fires and then simply never died. Today the main street is a living town: wooden boardwalks, costumed docents, a working blacksmith, stagecoach rides, gold panning, the 1858 Wells Fargo office, two original firehouses, an antique bowling alley. The airport sits right at the edge of the state historic park — one of the great fly-in destinations in the country, where the walk from the ramp is a walk into the 1850s.
California's capital is a Gold Rush city. When James Marshall found gold in the foothills in 1848, merchant Sam Brannan opened a store on John Sutter's riverfront embarkadero, and the rush did the rest — Sacramento was the trading post where every miner outfitted before heading to the diggings. The waterfront survives as Old Sacramento, the West's first historic district: 53 preserved 1850s buildings on raised wooden sidewalks (the streets were jacked up a full story after repeated floods, leaving tunnels still under downtown), plus the California State Railroad Museum and the western terminus of the transcontinental railroad. The State Capitol's copper dome rises a mile east, linked to the river by the Tower Bridge — painted metallic gold by public vote, a vertical-lift span that's also the shortest state highway in California. Sutter's Fort, where it all began, still stands a few blocks farther.
Just outside KMER. Over 70 military aircraft on outdoor display, including the holy grail of bomber collections: a Convair B-36 Peacemaker (one of only four left), a B-52D Stratofortress, an SR-71A Blackbird, a U-2 Dragon Lady, a B-58 Hustler, an F-14 Tomcat, an F-105 Thunderchief, and many more. Castle was a SAC base from 1941 until 1995, training B-52 crews for the nuclear deterrent mission. The aircraft sit on the same ramp where Cold War alert crews waited for the call that, thankfully, never came.