Tucked into the head of Avalon Canyon, 1.3mi inland from the bay, this 38-acre garden highlights Catalina's native plants, along with cacti and succulents. The 130ft Spanish-style memorial, built in 1934 of reinforced concrete made with aggregate quarried and crushed on Catalina, honors William Wrigley Jr. Steps lead to a platform beneath its 80ft tower, offering views of Avalon.