In the ultimate search for an adrenaline rush, YouTuber Urban Endeavors decided to climb a 1,500-foot-tall (475m) TV tower. With safety equipment, that would have already been quite the achievement, but of course he decided to do it without. At least the climber and his team were smart enough to check over months of preparation that the tower was not in use anymore, meaning that at least there was no danger of electrocution and radiation. The climb took 2.5 hours to ascend, and 1.5 hours to descend, making what the climber claims is the world's tallest free-climb of an antenna. Be sure to not watch this shortly after having eaten something, it is definitely stomach-turning.