Actually, there's no reason you can't do the RBR (http://www.roundbritainrally.co.uk) - basically, in about March, you get sent a list of clues to landmarks all over the country (about 2 per county). You decipher the clue, drive to the landmark and get a photo of it with your bike/car.
At the end of the year (October or so), you send in all the photos you've managed to get - winner is person(s) who get to most landmarks.
I've tended to get the list and then plan a couple of weekends away, finding as many landmarks as I can find on each trip. The landmarks are almost all in really interesting places that you would never normally go to. I've never bothered sending in the photos because I've never got more than 20 or so - I just enjoy the trips out.
Highly recommended.