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.
Amtrak 's 195-mile (314 km) Keystone Service provides frequent higher speed passenger train service along the Amtrak-owned Keystone Corridor between the Harrisburg Transportation Center in Harrisburg, Pennsylvania and 30th Street Station in Philadelphia.t is Amtrak's fifth-busiest route, and the railroad's third-busiest in the NEC. In fiscal year 2013, the service carried 1.47 million passengers, an increase of 3.2% over FY2012.