Despite not having sexual feelings towards a person, asexual individuals can experience aesthetic attraction when admiring a good looking person, the way a person dresses, the way someone moves, and other things that cause visual stimulation. Just like people with typical sexual desires, asexual people often have "types," ideals of body types, hair color, and other characteristics that they are attracted to.
While the term aesthetic attraction is widely used in the asexual community, many asexual individuals reject it. For these people, it seems strange to suggest that they are attracted to anyone as their perception of looking at attractive people is not too dissimilar to their experiences looking at an attractive sunset or apparel item. Neither has a great emotional component that the term aesthetic attraction suggests. Aesthetic attraction isn't solely restricted to asexuals. Most people, regardless of sexuality, are initially attracted to others based on appearance.