Home to one of the world's most active volcanoes, snow-capped Piton de Fournaise, Réunion is a little-known gem. This rocky, French-governed island off the coast of East Africa is easily explored by Les Cars Jaunes, yellow buses that link main settlements. The road into the mountains provides breathtaking scenery. Bike tours on rough backroads are an option for the brave and the extremely fit. Beyond the reach of cars, the untamed village Cirque de Mafate shows the island's wildest side.