New Hampshire

Portsmouth Harbour Trail.  Comprehensive map-based tour with nice photos and descriptions.  [ccr]
http://www.portsmouthnh.com/harbourtrail/harbourtrail.cfm

Hubbard Brook Experimental Forest.  A comprehensive description of this area, which was established by the USDA Forest Service in 1955 as a major center for hydrologic and ecological research.  [ccr]
http://www.hubbardbrook.org/overview/introduction.htm

Wolfeboro Online.  The non-commercial web site of "the oldest resort town in America."  It includes community discussions, history, maps, web cam, photos, and more.  [tdh]
www.wolfeboroonline.com/