The cover of 'The Lord of the Rings' trilogy features a simple yet powerful design, depicting the One Ring against a dark background. The cover's minimalistic approach perfectly symbolizes the epic and timeless nature of the story, where a small band of heroes embarks on a perilous quest to save Middle-earth. The use of typography and the iconic ring motif create a sense of intrigue and allure, making it one of the most iconic fantasy book covers of all time.