Derby is England's most central city and a powerhouse for industry and production. Derby Silk Mill is known as the oldest factory in the world and gives a true sense of Derby's social history. Visit the revived Cathedral Quarter for markets, restaurants, shops, and cafes. For an escape into nature, walk along the Derwent River's UNESCO World Heritage-protected sections. The Sanctuary Bird and Wildlife Reserve and Derby's Arboretum are other must-see nature sites.