Palomar Observatory Whenever I visit San Diego, I never miss a chance to go up to Palomar Observatory. It is the home of the legendary Hale 200 inch telescope that was the reigning champion among telescopes until about 25 years ago. It is perched atop Palomar mountain and the building is open to the public. You can see through a window, the famed instrument though you cannot actually approach it. The telescope aside, it's an amazing drive from San Diego to the mountain as it goes through some of the most scenic areas in Southern California. If you have half a day or if you're driving from San Diego to Los Angeles, it's a great way to see the country and to visit a significant site. Great picnic areas and a little gift shop as well. T4.

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