Thrill seekers often go to extremes to get their adrenaline fix. Some ride biggest and fastest roller coasters in the world. Others go skydiving, or bungee jumping. There are a select few who take it to the next level with their risk-taking activities. They are called rooftoppers, and they travel around the world to climb (without any safety equipment) the tallest buildings in the world. One man, Kirill Vselensky from Russia has gain significant notoriety documenting his exploits through Instagram and Youtube. The images are shocking to say the least. This man is FEARLESS!