If you are into road racing this is the place. By far my favorite race track in the entire world.. You can check out vintage racing, modern sports cars, SCCA club racing or attend one of several drivers school/open track days with your own car.
Lime Rock Park
Beautiful area but no hotels to speak of near the track. Plenty of camping and bed and breakfast type accommodations nearby, reserve well ahead of time if you plan on attending a race weekend. One goofy thing about Lime Rock is they aren't allowed to race on Sunday because of a local noise ordinance so race weekend usually consist of Friday and Saturday and the occasional Monday for selected holiday events.