Start your day with a delicious Icelandic breakfast at Sandholt Bakery in Reykjavik.
Head to Thingvellir National Park, a UNESCO World Heritage Site, where you can walk between the tectonic plates. Then, visit the geothermal area of Geysir to witness erupting geysers. After that, marvel at the powerful Gullfoss waterfall before reaching Selfoss for the night.