Aesthetics is the study of people’s mind and emotions in relation to the sense and evaluation of beauty. Based on the essence and principles of beauty, aesthetics studies human judgement of beauty, the relationship between the sense of beauty and the respective object, the experience of the sense of beauty, and the process of beauty creation and development. Traditionally, aesthetics has been categorised under philosophy with art as the main focus, which is known as ‘The Artistic Philosophy of Beauty’. Aesthetics is one of the supporting theories of tourism earth science. Since the pursuit of scenic beauty is an important objective of tourism, the evaluation, appreciation, planning and utilisation of natural landscape resources related to earth sciences require detailed knowledge of aesthetics.