Synonyms for Fascinating (same or very similar meaning)
WordNet sense 1 (capable of arousing and holding the attention):
absorbing, engrossing, gripping, rivetingWordNet sense 2 (capturing interest as if by a spell):
bewitching, captivating, enchanting, enthralling, entrancingWordNet sense 3 (pleasing to the eye or mind especially through beauty or charm):
attractiveFrom the ODE community, based on WordNetadd/edit