Vandenberg Space Launch Complex 10

Space Launch Complex 10 (SLC-10), or Missile Launch Complex 10, is located on Vandenberg Space Force Base in Lompoc, California. It was built in 1958 to test ballistic missiles and developed into a space launching facility in 1963. Prior to 1966, Space Launch Complex 10W (SLC-10W) was known as Vandenberg AFB Pad 75–2–6. It remains a rare pristine look at the electronics and facilities created in that era that helped the United States grow its space capabilities. The last launch from this complex was a Thor booster in 1980. It was declared a National Historic Landmark in 1986. It is undergoing an eight-year restoration, and public visits are possible, if arranged in advance.

Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).