Capital of Iceland, Reykjavik is still a small city. The houses are mostly made of wood and very colorful. The church is the main attraction in a country where nature means everything. You will - of course - be able to bath in one of the natural hot springs and choose to keep your cloth on (or not).
Gullfoss means "Golden Waterfall" and it is indeed a great view. One of the nicest waterfalls in Iceland.
Þingvellir was the site of the annual parliament of Iceland from 930AD till in 1798 AD. It is really country site, part of the Golden Circle.
The Skógafoss is one of the biggest waterfalls in Iceland with a width of 25 metres and a drop of 60 m.
Vatnajökull National Park is one of three national parks in Iceland and encompasses all of the huge Vatnajökull glacier and extensive surrounding areas featuring rivers, glacial ice, volcanic and geothermal activity. It is a World Heritage Site.
The Godafoss, the waterfall of the Gods, is located just North of Akureyri,
Jökulsárlón is a large glacial lake in southern part of Vatnajökull National Park.
Landmannalaugar is at the edge of a large lava field and known for its natural geothermal hot springs, colors and surrounding landscape.