Though it may not figure prominently into the average whirlwind Eurail trip across the continent, Vienna’s role in the development of European culture as we know it can hardly be overstated. Granted, the names of none of its cultural institutions come mind as readily as those of the Prado, the Uffizi Gallery, or the Louvre. But as museums go, Vienna more than holds its own, both inside and outside the neighborhood aptly named the Museumsquartier — and not just in the physical world, but online as well. Recently, the Albertina Museum in Vienna put into the public domain 150,000 of its digitized works, all of which you can browse on its web site.