Action Squad is an old-school Minneapolis and Saint Paul urban-exploration archive built from missions into tunnels, mines, abandoned industrial sites, utility spaces, and other pieces of infrastructure most people pass without seeing.
NiagaraFrontier.com preserves a detailed chronology of the 1969 dewatering of the American Falls, when engineers diverted the river, built a cofferdam, studied the rock face, recovered debris and bodies, and let visitors walk onto the exposed riverbed.
Eclipse '98 documented a 1998 Caribbean solar-eclipse webcast built from more than 700 files, a dozen servers, static HTML, CGI, FTP distribution, and a volunteer team learning web-scale failure in real time.
Bill Spindler's McMurdoStation.com combines personal Antarctic photographs, station history, master-plan documents and years of construction updates for the U.S. Antarctic Program's McMurdo Station.