In the centre of Iceland’s sprawling capital city, the modern organ-pipe-shaped Hallgrimskirkja church dominates the top of town. Cosy bars, cafes and shops line the surrounding streets heated by Iceland's geothermal waters. The regenerated harbour is home to a striking modern concert hall. Popular trips include to the Blue Lagoon, a geothermal spa near the village of Grindavik, and the Golden Circle tour taking in Gullfoss Waterfall and the mighty Strokkur geyser in Thingvellir National Park.