If you are taking an adventure honeymoon, or would just like to see the sights in something other than a cab, try the Strida Bike. It's a folding bike that is greaseless and maintenance free. It folds in 7 seconds or less. You can bring it on a subway, on a train, or even checked on an airplane. When folded and in it's carrying bag, it looks like a set of golf clubs. It can easily be stored in a hotel closet when not in use. It comes in many different colors and three different sizes.
Retailers are located throughout the world. To find one in your neck of the woods, check out the Strida Bike Dealers.