YouTube / Via youtube.com Extreme sports have created a new kind of daredevil among Millennials. As the world has become increasingly dependent on instant gratification and living in the moment, some have found new ways to get their adrenaline pumping. These sports require no gym membership, there are no rules, and there are no teams. It's man vs. gravity and success is measured, not in points or trophies, but in survival. Urban climbing, otherwise known as free climbing, structuring, or, more popularly, buildering, has gained a following that refuses to be ignored. Climbers boast of going for the most extreme climbs, and up the ante each time to increase the danger and get a bigger thrill. Despite the danger involved, the attraction remains, and climbers continue their endless search for the next obstacle to conquer. What is Buildering?The simplest answer is that buildering is essentially climbing buildings. There is no limit to how high the building can be, and it technically does not have to be a building at all. Any structure will fall into the category of buildering, including bridges, water towers, scaffoldings, and frames of buildings under construction, anything manmade that can be scaled, climbed, or maneuvered upon to reach the top.Typically, urban climbers accomplish their feats under the cover of darkness. "night climbing" is done out of necessity to avoid the attracting unwanted attention to what they are doing. Buildering is often done without the permission of the owner of the building, and the danger and the unusualness of the activity draw crowds if done in broad daylight. One of the most dangerous aspects of buildering is that climbers use no equipment to aid them in their ascent. This means there are no harnesses, ropes, or safety nets to prevent the climber from plummeting to the ground. Climbers will normally use nothing more than their own agility and strength, a pair of sneakers, and their bare hands. Is Buildering Legal?Due to the incredible danger involved, and the fact that climbers are often trespassing, buildering is illegal, but that doesn't stop climbers from scaling structures all over the world. Buildering has been happening since the right before the beginning of the 20th century. Like most movements, it started out small, gained popularity over time, and remained a virtually nameless stunt for decades before being dubbed "roofing" by some, and, eventually, morphing into urban climbing.There have been numerous arrests in recent years of climbers daring to climb during the day, or they were simply caught when spotted by someone noticing a figure climbing a structure. Either way, there is no getting around the fact that buildering is against the law. Many diehard climbers feel this is a consequence for doing what they enjoy and accept that, but what if a climber wants the same thrill without the worry of winding up in handcuffs?Which Activities Offer the Same Thrill?Buildering is the extreme version of rock climbing undertaken in an urban setting under somewhat dubious circumstances. Individuals seeking the rush and excitement of buildering, but in a legal setting and surrounded by nature should try rock climbing in one of the nation's parks. Yellowstone National Park is one of the most popular spots for climbers looking to test their skills, endurance, and daring.The advantage of visiting a national park is the variety of outdoor activities that can be participated in for the sake of adventure. Rock climbing in Yellowstone offers challenges for even the most experienced climber, breathtaking views of the park's landscape that stretches out for miles in every direction, and the benefit of not having to worry about being caught doing something illegal.The rock walls and peaks at Yellowstone rival any skyscraper or bridge an urban climber can scale. There is also something primitive about man conquering a naturally formed structure, pitting human against nature. A 14,000 foot mountain that has withstood the test of time for thousands of years brings climbers better in touch with the elements, and gives adventurers the opportunity to see the world from a point of view that cannot be reached using an elevator and looking out a window.Buildering was invented by climbers responding to their need to take on the world around them, in a location that they were most familiar with and see their world in a new way. While this can still be done without dangling from the side of a roof by the fingertips, It's still recommended that you look into different types of life insurance before taking up such a daring sport. Instead, climbers can dangle by the tips of their fingers from the side of a mountain, dominating Mother Nature in all her glory.