Make the most of your time in Hiroshima and enjoy nature at its best on this 9-hour guided tour. In a group of no more than six, travel by bus to the Sandankyo Valley, famed for its 8-mile-long (13-kilometer) ravine, which many claim is the most picturesque in Japan. Get off the beaten track in this peaceful valley; take a boat out on the water, stroll along the promenade and admire its five waterfalls and seasonally changing landscape.