In operation from 1776 to 1903, the Catoctin Iron Furnace was a community in itself. Founders, miners, clerks, charcoal makers, storekeepers, teamsters, and others came together under the iron master’s supervision. A furnace stack, the iron master’s Manor House ruins, and self-guided trail. Hours: Daily, 8 AM to SUNSET. Handicapped accessible. VISA, MC

Cunningham Falls State Park Thurmont, MD 21788