It's back in September, at the Brooklyn Academy of Music (BAM).
We saw it during the 1984 performance at the BAM. It's a memorable, hypnotic theater experience, a collaboration between Robert Wilson, Philip Glass, and choreographer Lucinda Childs.
4 1/2 hrs, no intermission, but you can come and go as you please. Wine and snacks in the lobby throughout.
When performed at NYC's Metropolitan Opera in 1976, Einstein was remarkable in its theatrical innovations, but many of them have since been absorbed into the mainstream.
If you are interested in music, theater, or dance, I would still say that it is not to be missed. However, it ain't a Broadway-type performance. I wouldn't call it highbrow - just unique. It sort-of washes over you in dreamlike fashion. I found the visual imagery to be unforgettable. It is a dream, a spectacle. A non-theater and -dance person might get bored without smoking a little weed first. Little snippets of it at the link above.
I cannot let my kids miss this. Worth a trip from almost anywhere.
Here's the Wiki entry.