 In the late 18th century, modern Druids developed fraternal organizations modeled on Freemasonry that employed the romantic figure of the British Druids and Bards as symbols of the indigenous spirituality of Prehistoric Britain.Some of these groups were purely fraternal and cultural, such as the oldest one that remains, the Ancient Order of Druids founded in 1781, creating traditions from the national imagination of Britain.Others, in the early 20th century, merged with contemporary movements such as the physical culture movement and naturism.