▲This incredible avenue of beech trees is the only one of its kind in the world. This fairy-tale-like wonder is located along Bregagh Road between Armoy and Stranocum in County Antrim, Northern Ireland.

▲The trees were planted by a family with the purpose of decorating the access to their mansion a few years ago. The result was this incredible natural wonder.

▲This incredible natural attraction located in the Gerlach area near Nevada (United States) was accidentally created in 1916 during well drilling.

▲However, it was only in the 1960s while exploring for sources of geothermal energy that the geyser began to 'spit' a hot liquid, filled with dissolved minerals and bacteria.

▲This green and red wonder is today one of the most incredible natural settings in the world. Its rare formation gives the place an other-worldly quality.

▲Located near the town of Biei on the island of Hokkaido, this man-made lagoon is the result of works on the Biei River carried out after the 1988 eruption of Mount Tokachi to protect the town from volcanic mudflows.

▲The color is likely the result of accidental presence of colloidal aluminium hydroxide in the water.

▲The parched and still-standing trees, along with the color of the water, give the place a magical atmosphere, both in the winter and in the summer.

▲This incredible 7 km tunnel was created by nature and dubbed the 'tunnel of love' by Kleven's residents.

▲The place has become an attraction primarily among couples. Legend has it that if they pass through the tunnel holding hands, they prove their true love for each other.

▲The tunnel is actually a section of industrial railway and, though it's rare, the occasional train still travels through it.

▲Ruskeala is a rural town located in the Republic of Karelia, within the Russian Federation, and is also the site of a famous marble quarry.

▲Much of one of the quarries exploded about 250 years ago and the site flooded, forming what we see today. Since then, this wonder can be visited by tourists from around the world.

▲Known locally as the 'Door to Hell' or 'Gate of Hell,' this incredible and mysterious crater was accidentally created by Soviet geologists who set it on fire to prevent the spread of methane gas.

▲The crater has been burning continuously since 1971, fueled by the rich deposits of natural gas in the area.

▲The orange flames are about 70 m in diameter and produce a strong sulfuric smell. The phenomenon impresses tourists from all over the world and is still a mystery to geologists.

▲This incredible mountainous landscape is a pre-historic gold-mining site and the largest open-pit gold mine in the entire Roman Empire.

▲The result was this fascinating landscape that remains intact to this day.

▲These two incredible lagoons, located in the Salar de Atacama, were the result of a geological study carried out by men.

▲The result was this incredible natural wonder that fascinates tourists from all over the world.

▲Here the accident wasn't caused by humans, but by the work of nature. This is a natural pool that was created when the dome of an underground river collapsed due to massive erosion thousands of years ago.

▲The result is a true oasis of crystal-clear water and incredible vegetation that fascinates tourists from all over the world. The Hamilton Pool is located near Austin, Texas (United States).

▲This incredible natural pool was created as a result of erosion caused by the water. The result is a magical paradisiacal setting that attracts tourists from all corners of the world.

▲This incredible water hole is a massive underwater sinkhole. Forming a perfect circle, it is just over 300 m (about 0.2 mi) wide and 124 meters deep. It was formed tens of thousands of years ago, when the sea level was much lower than it is today.

▲These colorful mountains are one of the world's most astonishing natural wonders.

▲The Pamukkale formation is the result of thermal springs underneath that caused calcium carbonate spills that later solidified and gave rise to these natural pools.

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These gigantic water basins that cascade down a hill are situated near Denizli and are one of Turkey's most fascinating attractions.

▲It's a true natural wonder that fascinates tourists from all over the world.

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Bryce is a large 'natural amphitheater' formed by erosion caused by the action of wind, water, and ice.

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These peculiar and colorful formations in sandstone and other minerals were formed more than 24 million years ago.

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These tourist attractions are wonders that were created by mere chance, whether by the action of man or by unusual natural phenomena. They are true gems that amaze tourists from all over the world.

Discover the incredible wonders that were created by accident.