An eagle-eyed fan spotted an aloof figure standing on a rooftop at a recent Taylor Swift show, and the internet is awash with jokes about whom the mysterious spectator could be. The Europe leg of the Eras Tour is in full swing, with Swifites in Sweden, France and Portugal having crammed into sold-out stadiums in recent days. With tickets now a hotter commodity than actual gold dust, a recent clip from Taylor Swift‘s visit to Madrid appears to show one fan who used a rather creative method to sneak into the event of the year. Gazing down at the three-hour spectacle from the extremely high vanta…