Derwent valley is the cradle of factory system which made not only a productive order,but found the worker's quarter based on the humanitarianism.

I've been to some mills,North mill of Belper was most impressive for me.Almost all mills are now used as museum,restaurant and youth hostel and located on the magnificient gorge.And formerly Sir Richard Arkwrit's castle,which is located on the hill near his mills,is now a inexpensive hotel.