Þingvellir National Park is not just any old park - it's where the cool kids of Iceland used to hang out back in the day! From 930 to 1798, this place was buzzing with the Althing, an open-air assembly where free folks gathered to set laws and settle disputes. It was like a giant outdoor parliament party where history was made and legends were born. The park is like a time machine, showing off ancient turf and stone booths where all the action took place. So, if you want to feel the vibes of Iceland's rad past, Þingvellir National Park is the place to be!