A new website targeted at travelers can have some great applications for historians as well. Arounder lets you pick a building or site and view it in the round. It works with Google Maps to help you find a site (or you can choose from a list of highlights and virtual tours) – double-click on your choice and you’ll get a beautiful full-screen panorama image that you can pan around in 360 degrees (using QTVR files – QuickTime Video Recordings).
Most of the cities offered so far are in Europe (with a range of museums, cathedrals, parks etc. to view) but there is a growing list of US cities as well.