Art aficionados will want to stop by the Carnegie Museum of Art. This museum displays art dating from prehistoric times to the present from all over the world, although it mainly focuses on contemporary American and European works. See the masterpieces of famous artists from the past as well as modern artwork done in new media, like films.
See the stars, or at least a place where they study the stars, at the University of Pittsburgh’s Allegheny Observatory. This national historic landmark has been a vital part of American astronomical research since 1859. Nowadays, the Allegheny Observatory is open to free public tours from April until the end of October.