Iceland is a country where the itinerary follows geology: waterfalls, glaciers, geothermal fields and black-sand coasts, most of them reached from the ring road that circles the island. Reykjavik is the base and the only city of size, and much of what people come for is within a few hours of it.
The guides on this page cover Reykjavik and Iceland overall. Season changes the trip fundamentally — summer brings near-continuous daylight and full access to highland routes, while winter offers northern lights but short days and closed interior roads. Weather shifts fast enough that road conditions should be checked daily, and unpaved F-roads require suitable vehicles and are closed much of the year.