The LAVA museum home page is an encyclopedic account of many modern museums. Information is indexed in four ways. You can choose to access the archives via listings that divide the information according to architect, project, date or place. There is a lot to browse here. The index helps sort through the data which is thoughtfully presented with color photographs and straightforward facts.
Little attention is given to the content of the museums.
Rather, the Lava page examines the architects who designed the buildings. Also the page briefly discusses the considerations of the designs and their rapport with the art. This is an interesting glimpse at what goes on with museums before the art is installed. This page is a good starting point to find out about modern museums. There is an emphasis on German art at this site.