The Atlas Obscura Guide To San Diego
40 Cool, Hidden, and Unusual Things to Do in San Diego, California
Updated March 26, 2024
Unusual Attractions in San Diego
Cool Places to Eat & Drink in San Diego
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9 Surprisingly Ancient Marvels in Modern California
Long before California was home to tech campuses, freeways, and palm trees, Native inhabitants etched huge designs into the landscape. Even before that, at roughly the same time that the Pyramids of Giza were under construction, a tree that still survives today began taking root. And even farther into the past, glaciers and mammoths created enduring monuments to antiquity. Across the state, the distant past is still within easy reach.
![The Blythe Intaglios are as mysterious as they are massive.](https://img.atlasobscura.com/dAt0PD1pJIfZAuFuLJmGDAGX96gYaNVBjbzquBA8MQk/rs:fill:380:380:1/g:ce/q:81/sm:1/scp:1/ar:1/aHR0cHM6Ly9hdGxh/cy1kZXYuczMuYW1h/em9uYXdzLmNvbS91/cGxvYWRzL2l0aW5l/cmFyeV9wcmVzZW50/YXRpb25faW1hZ2Vz/LzQzYTZjNDdkLTAw/NTUtNDkxZS05MTA2/LWFkNzNmNGUwZWJm/Mjc0NjJjMzI1OWRi/OTM5ZjA2YV8xMDI0/cHgtQmx5dGhlX0lu/dGFnbGlvc18tX0h1/bWFuX0ZpZ3VyZV8x/LmpwZw.jpg)
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