From Wired News:
Most museums are hushed, mannered places. Not in St. Louis, where visitors to the City Museum are invited to get physical in a convoluted maze of monkey bars, shadowy burrows and gushing waterfalls. By Michelle Delio.
The story includes lots of photos. Best quote:
Incidents like that made us mournful that a museum like this will never be built in our home town of New York City. As much as the city likes to pride itself on being the cultural capital of the world, lawyers and insurance agents would descend on any museum that dared to scare, scrape and bruise its visitors in the name of art.