Peningagjá (The Money Chasm) at Þingvellir National Park
  

Peningagjá (The Money Chasm) at Þingvellir is a deep fissure filled with crystal clear spring water; people throw coins into it from the bridge that lies across. The coins give off strange reflections as they drop through the water, it is said that if you can follow the coin all the way down until it comes to rest on the bottom, your wish will come true.