[Discover] Ghost Towns and Abandoned Cities | WebUrbanist http://weburbanist.com/2008/10/19/ghost-town-abandoned-city-examples-images/
(photography travel abandoned urban) 
[Discover] Architecture Portal News: Soviet Underground Submarine Base http://www.archibase.net/archinews/7129.html (submarine military abandoned urbandecay)
[Discover] Four Abandoned Stations of the London Underground : Environmental News Blog | Environmental Graffiti http://www.environmentalgraffiti.com/offbeat-news/four-abandoned-stations-of-the-london-underground/ ... (abandoned london photos interesting)
[Discover] Pollepel Island - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Pollepel_Island (island castle abandoned)
[Discover] London Underground History - Disused Stations on London's Underground http://underground-history.co.uk/front.php (london uk travel history)
[Discover] Architecture Portal News: Soviet Underground Submarine Base http://www.archibase.net/archinews/7129.html (submarine military abandoned urbandecay)
[Discover] Four Abandoned Stations of the London Underground : Environmental News Blog | Environmental Graffiti http://www.environmentalgraffiti.com/offbeat-news/four-abandoned-stations-of-the-london-underground/ ... (abandoned london photos interesting)
[Discover] Pollepel Island - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Pollepel_Island (island castle abandoned)
[Discover] London Underground History - Disused Stations on London's Underground http://underground-history.co.uk/front.php (london uk travel history)