Jökulsárlón, Iceland's iconic glacier lagoon, is a mesmerizing destination where icebergs calve from the Breiðamerkurjökull glacier and float towards the sea, often washing up on the nearby Diamond Beach. Easily accessible directly off Route 1 (the Ring Road), visitors can explore independently by car, though guided day or multi-day tours from Reykjavik are popular for convenience and often include transport. While the lagoon is open for viewing year-round, boat tours (amphibian or zodiac) typically operate from April/May to October/November, weather permitting, offering guided experiences; booking these in advance is highly recommended, especially during peak season. Costs are free for shoreline viewing, with boat tours ranging approximately from 6,000 to 15,000+ ISK per person. A typical visit duration is 1-3 hours, allowing time for shoreline exploration, a walk on Diamond Beach, and a boat tour if desired. Dress warmly in layers, even in summer, as it can be very cold and windy, and be prepared for changing weather conditions.