Here at LSC, staff have just been notified, and we have notified customers, that we are shut down for the rest of March.
https://lsc.org/update-regarding-covid-19
I've seen articles in the press that the MET Museum and MET Opera are shutdowns. This is likely related to New Yorks shutting down of gatherings of more than 500. https://gothamist.com/arts-entertainment/cuomo-shuts-down-broadway-limits-public-gatherings-under-500-people
The Nelson-Atkins museum is closed at least through April 3.