Helsinki, the capital of Finland, is a vibrant coastal city known for its stunning architecture, design, and unique blend of Eastern and Western cultures. Key attractions include Suomenlinna, a sea fortress; Senate Square, showcasing neoclassical architecture; and the Temppeliaukio Church (Rock Church), built directly into solid rock. Accessibility is generally good with well-maintained public transportation, though some older buildings may have limited access. The city is easily explored solo, with ample information available, but guided tours offer deeper insights into its history and culture. Peak tourist season is during the summer (June-August) when the weather is mild and many outdoor events take place; winter offers a different charm with opportunities for winter sports and viewing the Northern Lights (though sightings are rare within the city). A typical visit lasts 3-5 days, and costs can range from moderate to expensive, depending on accommodation and dining choices. Note that some attractions may have seasonal closures or reduced hours.