botanical garden - a facility where trees and shrubs are cultivated for exhibition. arboretum. facility, installation - a building or place that provides a particular service or is used for a particular industry; the assembly plant is an enormous facility.
Keystone, CO Weather. The average temperature of Keystone is 35.80Â°F, which is much lower than the Colorado average temperature of 46.26Â°F and is much lower than the national average temperature of 54.45Â°F. Historical Weather.
Keystone State Park is a 1,200-acre (486 ha) Pennsylvania state park in Derry Township, Westmoreland County, Pennsylvania in the United States. The main attraction of the park, which opened in 1945, is the 78-acre (32 ha) Keystone Lake, constructed by the Keystone Coal and Coke Company in the early 1900s. The park also has extensive picnic areas and several miles of hiking trails.