Alexander Dragunov is an architectural photographer, but his real passion is capturing images of subways. In this video, he gives a guided tour of his favorite metro system in Stockholm—and reveals that it is indeed stunningly beautiful.

The St Petersburg-born photographer shot this video with the BBC to explain why he thinks Stockholm's is 'the most beautiful metro in the world.' He also talks a little about how he goes about capturing his images, and explains that 10-minute waits between trains in the city makes it easy for him to capture the perfect photograph. [BBC]