Highlights nature and history at ingvellir national park erupting geyser at geysir hot spring area awesome power of gullfoss waterfall medieval history at sklholt church description the golden circle classic tour takes you from reykjavik city up to ingvellir national park arguably the most important site in iceland in terms of history culture and geology the birth place of the old icelandic commonwealth and the alingi assembly the plains of ingvellir is where icelands most