Every geyser on Earth — Old Faithful included — is named after this exact hot spring
1294
First documented eruption
170m
Highest recorded eruption (1845)
6-10 min
Strokkur's eruption interval
Free
To visit
The Story
Here's the thing worth sitting with for a second: the word "geyser" — used in English for every single spouting hot spring on the planet, from Yellowstone's Old Faithful to fields in New Zealand and Russia — comes directly from this one spring, right here in the Haukadalur valley. European naturalists traveling through Iceland in the 18th and 19th centuries wrote home about "the Geysir" so consistently that the name simply became the generic word for the phenomenon everywhere else.
The original Geysir has been documented since at least 1294, and possibly described in writing as early as 1206 — making it one of the oldest named natural features anywhere. At its historical peak, it was genuinely violent: an 1845 eruption reportedly hurled boiling water 170 meters into the air, and in the early 1900s it erupted reliably enough that visitors could watch it go off every half hour. It's dormant today, only reactivating occasionally after earthquakes.
You're standing at the place that named the phenomenon.
What you'll actually watch erupt is Strokkur, 50 meters south — Iceland's most reliable geyser, going off every 6-10 minutes without fail. It wasn't always so consistent: earthquakes repeatedly blocked its underground channels over the centuries, and it sat dormant for decades until 1963, when locals manually cleared the conduit themselves and got it running again on a schedule.
As You Walk Around
Easy to miss if you're not looking
Watch the water color right before Strokkur erupts. The pool visibly domes upward and turns a distinctive turquoise-blue in the seconds before it goes — a genuine warning sign if you know to look for it.
Stand upwind if you can. In windy conditions the spray blows sideways toward whoever's downwind — protect your camera, mineral-laden water isn't kind to lenses.
The original Geysir pool is worth a look even dormant. Silica deposits around the vent show hot springs have been active on this exact spot for roughly 10,000 years — long before anyone wrote anything down.
Fun Trivia
Things most visitors don't know
Officials used to fake eruptions on command. On Icelandic National Day, government geologists would force Geysir to erupt by adding soap, which temporarily lowers the water's surface tension. The practice was stopped for environmental reasons in the 1990s.
Napoleon's nephew came all this way just to see it. In 1856, Napoleon III's relative and his entourage visited specifically to witness Geysir erupt — travelers sometimes camped on site for days waiting for a show.
The name itself comes from an Icelandic verb meaning "to gush" or "go quickly forward." Every "geyser" you've ever heard of anywhere in the world is, linguistically, still just calling itself "Geysir."