Alaska

Historical Photo Collection.  A large number of historical photos from the Alaska Historical photo collection at the Alaska State Library. Indexed by location and topic.  Minimal text descriptions; excellent photos.  [ccr]
http://www.library.state.ak.us/hist/cent/pca020.html

Downtown Fairbanks.  Take this map-based walking tour with photos and descriptions of thirty places in Fairbanks.  Provides a link to photos of Juneau.  [ccr]
http://www.acsyellowpages.com/fairbanks/tour/index.htm

Douglas and Treadwell.  Historic photos of these towns from Juneau Public Library and the Alaska State Library.  [ccr]
http://www.juneau.org/history-old/photos.php

Anton Anderson Memorial Tunnel.  Take this map-based virtual drive through this auto/rail tunnel, from the State of Alaska.  [ccr]
http://www.dot.state.ak.us/creg/whittiertunnel/virtualdrive.htm#Placer Creek Bridge

Wrangell-St.Elias National Park and Preserve.  This map-based tour some historical commentary, identification of facilties, and some excellent photos.  By the National Park Service.   [ccr]
http://www.nps.gov/archive/wrst/virtualtour/virtualtour.htm

Digital Atlases, Searchable Digital Archives, and Other Sites Useful for Exploring Places:

Alaska Atlas of Panoramic Aerial Images.   A map-based collection of medium-scale images across the state, including many that are rather spectacular.  Organized by ten regions.  Created by William A. Bowen through the auspices of the California Geographical Survey at CSU Northridge.  [ccr] 
http://130.166.124.2/alaska_panorama_atlas/index.html