The Nemours Foundation has signed an agreement to buy 60 acres to put its children's hospital in the southeast Orlando "medical city" that eventually will include the University of Central Florida's College of Medicine, the Burnham Institute for Medical Research and a VA hospital. The 60 acres will give Nemours enough room to build a 550,000-square-foot hospital and clinic, with plenty of room left for a planned Ronald McDonald House and additional research space, say Nemours representatives.