Ebenezer Howard proposed the garden city concept as a solution to problems in late 19th century cities. He envisioned self-sufficient towns of around 30,000 people, surrounded by greenbelts, that combined the benefits of town and country living without their drawbacks. Letchworth Garden City, built in 1903, was the first to implement Howard's ideas of concentric design and separation of housing, industry and agriculture. The garden city movement aimed to reform urban planning and integrate people more with nature.