Poole Forge is a historic iron forge complex and national historic district located at Narvon, Caernarvon Township, Lancaster County, Pennsylvania. The district includes five contributing buildings and two contributing structures. They are the Ironmaster's Mansion, Paymaster's Building, spring house, two tenant houses, and ruins of a lime kiln and Pool Forge Covered Bridge. The oldest section of the Ironmaster's Mansion was built about 1779.