“Cultural buildings in the United States are being supersized, with newly enlarged museums opening this year in cities including Minneapolis, Indianapolis, and Davenport, Iowa.” Why? It’s competitive out there. “Jazzing up older edifices is one way institutions can stay competitive at a time when millions of tourists are flocking to museums of every kind. Recent estimates of visits to US museums – including zoos and historical sites – range from 640 million to 865 million annually.”