14 Reasons Cleveland Rocks
The Holden Arboretum
More than 20 miles of trails wind through the gardens of the 3,600-acre Holden Arboretum. Among the highlights: the 20-acre Helen S. Layer Rhododendron Garden, where some of the 500-plus cultivated varieties are nearly 60 years old. Late May is the time to visit for peak rhodo bloom. The arboretum is in Kirtland, 23 miles northeast of Cleveland (440/946-4400; holdenarb.org).