What would a $30 million gold dome be used for anyway? Historically what did they do there?

Let us take a closer look at the one in Jerusalem...the Dome on the Rock...almost looks the same as Pegasus dome in Hallandale, Florida at Gulfstream Park if you look too close at such things...XOXO Link: https://en.wikipedia.org/wiki/Dome_of_the_Rock

Evidently you can get a refurbished gold dome for just under $8 million...