Albright Knox Art Museum- Opening of the New Building with FREE admission is June 16 to 18, 2023- it was designed by Shohei Shigematsu.
If on-line tickets are sold out (free) you can get tickets at the door. The new extension will be closed from June 19 to July 20 to finish construction. The rest of the museum including the new atrium is open.
Also, make sure you to to the third floor of the new extension – great stuff there and new atrium in the older section.