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.
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.
Mývatn (*mosquito lake*) is a small lake situated in an area of active volcanism in the north of Iceland, near Krafla volcano. The lake was created by a large basaltic lava eruption 2300 years ago, and the surrounding landscape is dominated by volcanic landforms, including lava pillars, fumaroles and hot mud pools.
The Skógafoss is one of the biggest waterfalls in Iceland with a width of 25 metres and a drop of 60 m.
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.