The fascinating anachronism-lover’s blog, How to be a Retronaut, recently featured Ghosts of Amsterdam, an incredible work by Jo Teeuwisse which combines old photographs with photographs of the same locations today. Uncanny, ghostly images of present-day places blend with haunting people and mementos .

How to be a Retronaut taps an interesting genre that did not exist before Photoshop and mashup/remix culture. See also their Victorian Star Trek and the remarkable Augmented Reality Panorama.