Discover an amazing underground world at Stockholm, Sweden. Started back in the 1950’s, Stockholm Metro houses an exuberant amount of unexpected art. There is so much art that it is now called the world’s longest art exhibition. Several hundred unique works are currently on display with 90 out of the 100 stations featuring art. IT architect and Photographer Alexander Dragunov has a passion for subway photography and captured several of Stockholm’s most stunning stations for you to enjoy!