Socially conscious couples sometimes forego the traditional honeymoon getaway in favor of a volunteer trip. Whether your visit is to assist with the aftermath of a natural disaster (like the earthquakes that struck Haiti or Chile) or a man-made catastrophe (such as the oil spill in the Gulf), there are plenty of options to choose from. Your visit doesn't have to come in the wake of a disaster, either. Some couples travel all the way to Africa to perform missionary work, or stay close to home to participate in a Habitat for Humanity project.
Whatever part of the world you choose to visit, be sure to hook up with a legitimate volunteer organization before making the trip. Experts with a reputable group will be able to suggest possible roles for the two of you based on your skill sets, arrange temporary housing and help out with the other miscellaneous details of your trip.