Rephotography is, per Wikipedia, “the act of repeat photography of the same site, with a time lag between the two images; a ‘then and now’ view of a particular area.”

Some interesting examples:

• “FILMography is an ongoing art project by Canadian photographer Christopher Moloney that matches scenes from movies with their real-life, present-day locations. He has recreated film scenes in New York City, Los Angeles, Toronto, Chicago, San Antonio, Orlando, Rome, Naples, Ischia and Ho Chi Minh City.”
• Dear Photograph is Taylor Jones’s comparative effort.
• Project rePhoto is an iOS & Android app that facilitates creating these compositions (see video below), though no one seems to have taken notice.
• Damien Hypolite printed out screenshots from Assassin’s Creed, then held them up against modern Paris. [Via]
• Nearby, Pierre Folk has created interesting juxtapositions in documenting an abandoned Parisian railway.

[YouTube]