If you are in to history this is a neat resource.

[arcadian]

http://www.nps.gov/history/nr/research/index.htm

The National Register of Historic Places research guide and database. It gives a really cool perspective on local history and really gets into the nooks and crannies of our shared past. What I like is that it catalogs a lot of folk art and history that I otherwise would have never known about. I've also found out about places that I would pass everyday that had historical significance that I didn't know about. For instance this is a multiple listing, Sculpture by Dionicio Rodriguez in Texas MPS, it catalogs this sculptors work, mostly in San Antonio. He did, what is known as 'Faux-Bois' sculptures, which means "fake wood". His work is incredible. But I never would have known about this guy if I didn't scan the NRHP website from time to time.

http://en.wikipedia.org/wiki/Dionicio_Rodriguez

They also have these travel itineraries which take you to sites that are off the beaten path.

[pokerfan]

1. Cool

tOSU runs a pretty good site as well:
http://ehistory.osu.edu/index.cfm

In fact, I have it set as a keyword for firefox, I use it so often.