Toledo Botanical Garden | May 4, 11, 18, 25 Toledo Opera’s free pop-up performance series returns with four dates in May. Opera Outdoors performances are free, no reservations required. Wednesday, May 4, 6 p.m. Wednesday, May 11, 6 p.m. Wednesday, May 18, 6 p.m. Wednesday, May 25, 6 p.m.