Winter is coming soon in Westeros, but it just arrived in Britain. A group of actors transformed into White Walkers were spotted travelling south from Hadrian's Wall --which inspired the vision of author George R.R. Martin. Then they went to London, and were found at Oxford Circus, Tower Bridge and the Tower of London, before going to Buckingham Palace's Throne Room.
Of course, they used specially designed prosthetics and a team of body paint artists and stylists to get the right look.
It took them eight weeks to make the costumes, and each actor spent four hours in make-up before walking on the streets of London. The stunt was obviously done to promote the seventh season of HBO's Game of Thrones.
Game of Thrones Season will premiere on July 16, 2017, Sunday on HBO.