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Thingvellir National Park -- This Iceland highlight appeals to both geology buffs and history enthusiasts. It's home to the rift valley that marks the crest of the Mid-Atlantic Ridge, as well as the site where Iceland's first parliament, the Althing, gathered in 930 AD. It's part of Iceland's Golden Circle tourist route along with Gullfoss waterfall and Haukadalur geothermal area. Click on to see more of Iceland's most spectacular places.
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Haukadalur geysers -- The Great Geysir erupts only sporadically but nearby Strokkur geyser shoots steam and boiling water up to 30 meters every 10 minutes or so. The natural phenomenon is a reminder of the geothermal energy that powers this island.
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Gullfoss waterfall -- These spectacular falls lie on the Hvítá river, which is fed by the Langjökull glacier in southwest Iceland. It's a powerful reminder of the force and beauty of nature.
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Gullfoss -- The towering waterfall cascades 32 meters in two stages with whitewater tumbling over basalt rocks amid a lush green backdrop in the summer, or stark white snow in the winter months.
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The Krýsuvík geothermal area -- This stunning region features gurgling mud pools amid the yellow, red and orange clay-like earth. The dancing steam and hot springs are intertwined with many hiking paths allowing you to feel lost in the moon-like atmosphere.
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Blue Lagoon - A major attraction, the Blue Lagoon is located in a lava field in Grindavík in southwest Iceland. It draws visitors from around the world looking to soak in the warm, mineral-rich waters amid a dreamlike atmosphere.
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The Thórsmörk region -- This area offers a spectacular view of the landscape ranging from towering mountains to scores of glacial streams and miles of black sand. This interior region is a favorite among hikers in the summer months.
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Skógafoss -- This is an epic waterfall on the Skóga River in the south of Iceland, dropping 60 meters off cliffs which once formed part of the coastline. It's common to see single or even double rainbows over the falls.
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Reynisdrangar -- These striking basalt sea stacks jut out from a stunning black-sand beach at the foot of the Reynisfjall mountain in southern Iceland.
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Reynisdrangar -- The nearby village of Vik sits on a flat coastal plain and is the southernmost settlement in Iceland.
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Hallgrímskirkja -- This Lutheran church is one of the most prominent landmarks in Reykjavík. Standing 74.5 meters tall, it took 41 years to build and was finished in 1986. It's made out of concrete and the design was inspired by the shapes of lava cooling into columns.
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Tjörnin -- Tjörnin is a small lake rich with bird life, situated next to Reykjavík City Hall. It borders a scenic strip of Reykjavík, with colorful houses that beg to be photographed.
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Hraunfossar -- This natural feature in western Iceland is a series of waterfalls streaming more than 900 meters out of the Hallmundarhraun lava field.
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Hraunfossar -- The lava flowed from an eruption from a volcano lying under the Langjökull glacier. The water drains into the Hvítá river.
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Snæfellsjökull -- A huge glacier caps the summit of a volcano on the Snæfellsnes peninsula in the far west of Iceland. The peak soars to 1,446 meters and can be seen across the sea from Reykjavik on a clear day.
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Djúpalónssandur -- This beach at the foot of Snæfellsjökull is covered by small black pebbles that were smoothed and shaped by the force of the tides and whipping of the wind. Visitors love to wander among the frozen lava landscapes and curious rock formations.
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The Vatnshellir lava cave -- This 8,000-year-old lava tube takes visitors deep under the Snæfellsjökull National Park to view spectacular lava formations and stunning colors.
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The Akranes Lighthouses -- The bigger of the two lighthouses is open to the public and is a delightful place to visit any time of year. Away from bright lights, tourists and townsfolk flock to the site in winter to catch a glimpse of the northern lights dancing in the sky.
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The Látrabjarg cliffs -- On the westernmost tip of Iceland is a 14-kilometer stretch of sea cliffs which are home to millions of birds including puffins, gannets, guillemots and razorbills. It's one of the world's most spectacular sea-bird cliffs and offers myriad photo opportunities.
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Rauðisandur beach -- This vast beach with golden-red sand lies in a remote area of the Westfjords and offers gorgeous views of the Látrabjarg area with the mighty Snæfellsjökull glacier looming in the background.
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The Hornstrandir peninsula -- This wild peninsula on the northern tip of the Westfjords is a remote, sparsely populated area of mountains, valleys, tundra and fjords. It offers stunning hiking with excellent opportunities for spotting wildlife.
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Jökulsárlón -- This is a large glacial lake in southeast Iceland at the head of Breiðamerkurjökull glacier. In summer ice blocks carve off the snout and float down to the lake's mouth or wash up on the black sand beaches.
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Jökulsárlón --The icebergs vary in color from milky white to bright blue depending on the amount of air trapped within the ice and the light conditions at the time.
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Jökulsárlón -- Seals can often be seen lolling on the icebergs of the glacial lagoon.
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Skaftafell -- Part of Vatnajökull National Park, this is one of southeast Iceland's most stunning places. It's got towering mountains, glaciers, woods and waterfalls, plus green fields and black sands.
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Skaftafell - It's particularly striking on clear days with the snow-capped mountains and blue skies in the background.
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Skagafjörður -- This deep fjord in the north of Iceland is the focus of an agriculture-rich region where horses outnumber humans. Horse tours, rafting and hiking are just some of the possibilities amid the majestic scenery of mountains, coastline and chunks of glacial ice dotting the fjord.
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Grimsey Island - A wind-swept and secluded island that is as striking in beauty as it is difficult to reach. It lies 40 kilometers off Iceland's north coast and is home to fewer than 100 people. It's a haven for birdwatchers and for those keen to say they have stood on the Arctic Circle, which crosses the tiny island.
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Godafoss -- The "waterfall of the Gods" is a spectacular semi-circular cataract in northeast Iceland. The water of the Skjálfandafljót River falls from a height of 12 meters over a width of 30 meters.
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The Mývatn Nature Baths -- The man-made lagoon in the Lake Mývatn geothermal area in northeast Iceland features hot, mineral-rich water perfect for bathing. Similar to the Blue Lagoon but with its own unique atmosphere.
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The Mývatn Nature Baths -- The milky-blue water, which stands at 96.8°F, comes from the National Power Company's borehole in Bjarnarflag.
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Dimmuborgir -- The aptly named "dark castles" are a region of weird and wonderful lava caves and rock formations, arguably resembling an ancient citadel, east of Lake Mývatn.
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Dimmuborgir -- The black lava pillars were born from a collapsed lava tube from a large volcanic eruption more than 2,000 years ago.
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Víti -- This crater lake, next to the bigger Öskjuvatn, occupy the giant Askja caldera in northeast Iceland. The whole crater measures 50 square kilometers. Víti was formed during an eruption in 1875.
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Dettifoss -- This waterfall in Vatnajökull National Park in northeast Iceland is reputed to be the most powerful in Europe.
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Dettifoss -- The water comes from the nearby Vatnajökull glacier and has a greyish color because of the sediment-rich glacial run-off.
CNN  — 

There aren’t many countries where you can visit thermal springs and glaciers on the same day.

It’s no wonder Iceland tourism is booming.

Ranked among the world’s happiest countries, the Land of Fire and Ice is home to some spectacular natural surroundings.

In the southeast is Skaftafell, where visitors are treated to striking white glaciers against a backdrop of green fields and black sands.

Then there’s Hraunfossar in the west, a series of waterfalls streaming over 900 meters out of a lava field.

Skagafjörður in northern Iceland, is an agriculture-rich region with more horses then humans. Scenic delights here include snow-topped mountains, a beautiful coastline and chunks of glacial ice dotting the fjord.

The Blue Lagoon – arguably the busiest tourist sight in Iceland – is located down south. Hundreds of thousands of visitors from across the world travel here each year to soak in its nutrient-rich water.

Click through the gallery above for our pick of the most beautiful places to see in Iceland.