Historic Mount Wilson Observatory in California is being threatened by wildfires. The mountain staff have been evacuated as the Station fire closes in.
Mount Wilson is a great old observatory. It is home to the historic 100 inch Hooker Telescope. It was the largest in the world when it was built in the early 1900's and played pivotal role in Edwin Hubble's observations that proved the universe is expanding and led to the Big Bang Theory. Mount Wilson houses several other telescopes as well, including the CHARA array which does some very high resolution interferometry.
You can view the observatory webcam as long as it functions. I am embedding the current image.
Firefighters are on the scene and hopefully can save this historic site.
Reprinted with permission from the Half-Astrophysicist Blog.