Both Vök Baths and the Blue Lagoon are hot spring spas in Iceland, but they very are different. Vök Baths is in East Iceland and offers a quiet setting with floating pools on a calm lake. The Blue Lagoon is near Reykjavík, is bigger and more crowded, and is known for its milky-blue water and many facilities. Which one is better depends on what you like—whether you prefer a calm place or don't mind crowds, and the kind of experience you want.