Russian photographer Alexander Remnev, in red, takes a selfie with his friend standing on the top of the Princess Tower, the worlds tallest residential building at 413.36 meters, in Dubai, in this photo released on May 21, 2014. Nineteen-year-old Alexander Remnev scaled the Dubai skyscraper - before getting his camera out to take some stomach-churning pictures. Alexander, who was on holiday in Dubai with friends, said they climbed a number of the citys towering skyline during the course of their stay. [Photo/IC]