This underground business park is located underneath the grounds of Park University, in a small town across the Missouri River from Kansas City. A limestone mine operated here on the shores of the river until sometime in the 1940s. The University has used some of it for library and other campus services, but decided to further develop it into a commercial operation, which opened around 2005. There is now 385,000 square feet of leasable space, constructed within a mined area of more than a million square feet. Tenants include a data center, a whiskey distillery, and distribution companies.