Hato Bus Co.'s iconic yellow sightseeing buses are once again becoming familiar sights in Tokyo and Yokohama as they regain popularity among domestic travelers from outside the metropolitan area.The number of people who took part in tours of central Tokyo offered by the sightseeing bus operator in the 12 months through June soared 9.6 percent from a year earlier to 934,306, a level unseen since the late 1980s, when Japan's economy was experiencing an asset bubble.Particularly popular are tours that include visits to such sites as the neo-baroque-style State Guest House (Akasaka Palace), whi…READ FULL ARTICLE