Interest in landscape painting and in looking at the landscape itself grew rapidly through the second half of the eighteenth century. Definitions of types of landscape or view, seen from an aesthetic or artistic point of view, followed. At one extreme was the Sublime (awesome sights such as great mountains) at the other the Beautiful, the most peaceful, even pretty sights. In between came the Picturesque, views seen as being artistic but containing elements of wildness or irregularity. Theory of the picturesque developed by writers William Gilpin (Observations on the River Wye 1770) and Uvedale Price, who in 1794 published An Essay on the Picturesque as Compared with the Sublime and Beautiful.