Meticulously built using 3D camera projections of historical photos, Alexey Zakharov's The Old New World is perhaps the best chance of seeing American cities as they were at the dawn of the 20th century.
From July 2007 to April 2013, Arstechnica writer Jeremy Reimer wrote a series of articles covering the History of the Amiga. Now almost 3 years later, part 9 has been released. It covers the game changing (pun not intended but this is the Amiga) Video Toaster.
Mapping The Newest Old Map Of The World: A full-sized, 3D plaster relief facsimile of the Hereford Mappa Mundi, the largest surviving medieval map of the world (Previously).
Only a lucky few MeFites have the ability to view vaudevillian, commercial actor, inventor, and photographer George Mann's gorgeous vintage Kodachrome survey of Los Angeles coffee shops in 3-D as he intended.
Arkitypo — Using the 26 letters of the alphabet as the starting point, the curators selected a specific typeface that began with each respective letter to develop a 3d alphabet of alphabets. After thoroughly researching the history of each letter, they set out to represent each individual character graphically with elements of its history serving as the foundation. Arkitypo: letter rotations on Vimeo.
Gallipoli: The First Day [flash] An ABC documentary site about the WW1 ANZAC landing at Gallipoli, on 25 April 1915.
3-D images have a longer history than you might imagine. Stereographs were invented in the mid-1800s, and quickly became very popular. You can still view 3-D pictures of the Civil War, cowboys and Native Americans, World War I, Egypt circa 1900, small town America of the 19th century, and zeppelin wrecks(!). How do you view them? You can buy or build a viewer (like this classic), but a better way might be to learn to do it with the naked eye (try this method if you have trouble). A new technique converts stereograms into "wiggle images" [prev.] the approach has been used on this picture of a downed zeppelin and this picture from the Civil War. Free software will let you make your own wiggle images.
The Villa Rustica in Hechingen-Stein. Take a stroll through the remains of a 1st to 3rd Century Roman villa in southwestern Germany. Includes a 3D reconstruction and panoramas. I was especially impressed by the heating system.