The Gonda Building is a medical building owned by the Mayo Clinic in Rochester, Minnesota, and designed by Ellerbe Becket Architects and Engineers.It rises 305 feet (93 m) in 21 floors, and was completed in 2001.The Gonda building was the largest building project in the Mayo Clinic’s history, the Leslie & Susan Gonda Building was constructed in three phases to a height of 21 stories. It has the capability to add 10 more floors.