What settings do you remember best from books? The Great Hall at Hogwarts? The Fires of Mordor? District 12 from the Hunger Games? The Land of Oz?
These settings have stuck in your mind for a reason. The author has used tricks and devices to make these places not only visible but tangible to the reader. Learn how to use the senses to describe settings from the real world or from your own imagination and plunge your readers into the world you have created.