MOCA Cleveland
I visited the new Museum of Contemporary Art last week for a quick lookaround. It definitely has a striking, well executed exterior, even if the reality of it doesn't exactly match what the renderings and presentation drawings showed.
There isn't much of a lobby, and you get the sense that this is a space where artists work , and the public is allowed to have a chance to peek in on them. It also reinforces the impression that the museum is primarily a black jewel, and that considerations about inhabiting it are somewhat secondary. This isn't necessarily a bad thing, but it does mean that the experience is very different from the Met or Guggenheim museums in NYC where you know that you're in the lobby.
Ultimately, it's a great building and will hopefully stimulate future work to be as ambitious and elegant.