Port Foster, located in Deception Island, Antarctica, is a unique destination within a flooded caldera, offering striking volcanic landscapes and opportunities to witness geothermal activity. Visits are primarily via expedition cruises, making accessibility dependent on ship schedules and weather conditions. Due to the remote and potentially hazardous environment, solo exploration is not recommended; guided tours led by experienced polar experts are essential. Tourist season is limited to the Antarctic summer (November to March) because of extreme winter conditions. Costs vary greatly depending on the cruise operator and itinerary, typically ranging from several thousand to tens of thousands of dollars. A typical visit duration within Port Foster usually lasts a few hours to a full day, allowing time for activities like hiking to volcanic craters, visiting historical sites like the old whaling station at Whalers Bay, and potentially taking a polar plunge. Be prepared for rapidly changing weather, and follow all guidelines provided by the expedition team to ensure safety and minimize environmental impact.