There is a waterfall called The Devil's Kettle in a state park of Minnesota. The waterfall remains a mystery to scientists because the western half of the water flows into a pothole; however, every attempt to trace the path of this half of the river once the water has gone into the pothole has failed.
The Icelandic Phallological Museum in Reykjavik, Iceland is solely devoted to the collection of penis specimens and penis-related art. It features 280 penises from 93 species of animals, including whales, humans, and (allegedly) trolls.
23Baarle-Hertog & Nassau
Baarle-Hertog and Baarle-Nassau are two municipalities in Belgium and Netherlands that have complicated borders which have resulted in 23 pieces of enclaves and counter-enclaves. The border is made visible on all of the town's streets to make it clear which side one is in.
In 1962, a fire which started in a landfill in Centralia, Pennsylvania ignited an underground vein of hard coal. The bustling town turned into a ghost town due to the massive underground inferno that has been burning since. The fire is expected to burn for at least another 250 years.
25Mountains of Kong
West African mountain range named the Mountains of Kong was charted on maps for nearly a hundred years. It was later discovered that the mountains never existed and were made up by the original cartographer.
The Baldwin Street in Dunedin, New Zealand is the world's steepest street. At its maximum slope, it measures 19° or 35%. The street holds a yearly event which involves rolling 30,000 Jaffas (Australian chocolate) down the street.
The village of Giethoorn in the Netherlands has no roads. People get around on foot or via one of the village's many canals
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More people have died climbing Table Mountain (3,500 feet) in Cape Town than have been killed by Everest (29,000 feet). Poor planning, dehydration and even losing concentration while taking selfies are to blame.
The city of Whittier in Alaska has a population of 214 people, almost all of whom live in a single building. The building has a school, hospital, church, and grocery store.
30Winchester Mystery House
Sarah Winchester, the widow of the founder of Winchester Company, built a confusing mansion to ward off the spirits of those killed by Winchester rifles. At its zenith, the house consisted of over 200 rooms, 10,000 windows, 47 fireplaces, 2,000 doors, several trapdoors, and multiple spy holes.