The Allen Centennial Garden is part of the UW Campus. They are open dusk to dawn year round and are free to visit. Though not large, they have a few unique planting areas surrounding a small pond with scenic bridge. The old Dean’s house is currently being converted into a new student center.
Parking is Free at the Observatory Drive Ramp and Tripp Circle after 4:30pm Monday–Friday, and all day Saturday and Sunday.
Allen Centennial Garden
620 Babcock Drive
Madison WI 53706