Stirling Falls, located in Fiordland National Park, New Zealand, is a stunning waterfall best experienced via boat tour on Milford Sound. Accessibility is limited as it requires a boat trip. Guided tours are the norm, offering insightful commentary and ensuring safe navigation. While Milford Sound is accessible year-round, weather can be unpredictable, so check conditions beforehand. Boat tours range in price depending on the operator and duration, typically lasting from 1.5 to 3 hours. Be prepared for potential rain and pack accordingly to fully enjoy this natural wonder.