Letchworth is home to the UK's first ever roundabout, which was built in 1909.

Letchworth was founded by Sir Ebenezer Howard (1850-1928) as his design for a garden city, within which he tried to combine the best of both town and country living. His second garden city was Welwyn.

Sir Ebernezer Howard (1850-1928) was the English founder of the garden city movement, and known for his publication To-Morrow: A Peaceful Path to Real Reform (1898). He created the first garden city - Letchworth Garden City, and then in 1920 Welwyn Garden City.