Highly visible 2.5 acre site reveals an ever-changing panorama of beauty; this peaceful respite serves as an outdoor classroom, offering research and training opportunities in plant identification and nomenclature as well as ecological and site management techniques for one of the few horticultural departments in Wisconsin's higher education system.Allen Centennial Garden is the artful living laboratory and public botanical garden of the Horticulture Department at the University of Wisconsin-Madison. The Garden serves as an outdoor classroom for UW-Madison students and the surrounding communities, providing meaningful learning opportunities for visitors of all ages.The Gardens are open year-round, dawn to dusk. Admission is free.