Iceland has some of the best in the world. The most visited are right beside the highway on The Golden Circle route, connected to the Hvitá River. Here several geysers erupt every few minutes. Geysir's geysers, for all their steamy, spectacular shooting of water high into the air, are really a quick stop off on a trip to the nearby Gullfoss waterfall.
There is not much else to do except watch water shoot out of the ground or visit the tourist shop across the road, but it's worth it.
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