Find Europe’s biggest hot spring, Deildartunguhver, about 5km west of Reykholt, just off Rte 50, near the junction with Rte 518. Look for billowing clouds of steam, which rise from scalding water bubbling from the ground (180L per second and 100°C). A brand-new bathing complex called Krauma offers sleek hot pools, a cold pool and two steam rooms. There's also a restaurant.

A take-and-pay tomato stall is usually set up in the parking lot – the tomatoes are grown in a nearby greenhouse that harnesses the spring’s energy. Also, look for the rare Blechnum Spicant fern, only found here. The closest bus, Strætó 81, stops at Kleppjárnsreykir, 3km away.

Lonely Planet's must-see attractions

Nearby Borgarbyggð attractions

1. Snorrastofa

3.48 MILES

The interesting medieval study centre Snorrastofa is devoted to celebrated medieval poet, historian and statesman Snorri Sturluson, and is built on his…

2. Reykholt Old Church

3.52 MILES

Among the more modern buildings found on the ancient farm of renowned historian Snorri Sturluson is a quaint church dating from 1896, which is open to the…

3. Snorralaug

3.54 MILES

The most important relic of historian and chieftain Snorri Sturluson's farm is Snorralaug (Snorri’s Pool), a circular, stone-lined pool fed by a hot…

4. Icelandic Goat Centre

5.67 MILES

Farm workers walk you through pretty fields with endangered Icelandic goats. The farm's most famous resident is Casanova, a bright-eyed goat who had a…

5. Hraunfossar

13.15 MILES

The name of this spectacular waterfall translates to 'Lava Field Waterfall' because the crystalline water streams out from below the lava field all around…

6. Into the Glacier

16.32 MILES

This enormous (300m-long) human-made tunnel and series of caves head into Langjökull glacier at 1260m above sea level. The glistening, LED-lit tunnel and…

7. Borg á Mýrum

16.59 MILES

The Borg á Mýrum farm, just northwest of Borgarnes on Rte 54, is the site where Skallagrímur Kveldúlfsson, Egil's father, made his farm at settlement. The…