Streetmuseum is a new (and free) augmented reality iPhone app created by the Museum of London that allows you to browse historical photographs in various parts of the city.
The app leads you to various locations around London using either the map or GPS. Once you're there, click the "3D View" button, and the app will recognize the location and overlay the historical photograph over the live video feed of the real world, giving you a brief glimpse into how the past looked.
"As a public service, HarpWeek has compiled this 50-plus year history of tobacco controversy and criticism as shown in the editorials, articles, news briefs, cartoons, illustrations, poetry, and advertisements of Harper's Weekly. The items are augmented with historical commentary by HarpWeek historian Dr. Robert C. Kennedy."
"It doesn't matter if you're a veteran teacher or a newbie just now taking college courses - finding new ways to get students engaged in the classroom is always a great thing. One way many teachers are reaching out is with the multitude of material found on the web, allowing them to turn everyday lessons into a multimedia experience. You can find a great amount of helpful material on these sites, including videos to augment your lessons, lectures to inspire students, documentaries to show them how things work, and loads of additional videos to help you become a better, smarter teacher."