Kizhi Island, a UNESCO World Heritage site famed for its intricate wooden architecture, is primarily accessible via hydrofoil from Petrozavodsk during the warmer months (typically May to October), with winter access possible but more challenging by hovercraft or snowmobile; visitors should confirm seasonal schedules as weather impacts transport. While solo exploration is possible, guided tours are highly recommended for deeper historical and architectural insights, often bundled with transportation. Expect a typical visit duration of 4-6 hours on the island itself, excluding travel time to and from Petrozavodsk, which is about 1.5 hours each way. Approximate costs include around 3,000-4,000 RUB for round-trip hydrofoil tickets and an additional 700-1,000 RUB for museum entry, with guided services extra. Wear comfortable walking shoes as paths are unpaved, and dress in layers due to potentially changeable weather on Lake Onega. Accessibility for those with significant mobility issues is limited due to the natural terrain.