Tokyo bus tour operator Hato Bus Co. celebrated its 70th anniversary on Tuesday, with its unique tours around the capital continuing to attract many visitors from around the country and overseas.

Known for its yellow buses marked with its logo dove, or "hato" in Japanese, the company has long offered a variety of courses, ranging from conventional tours to famous tourist spots including Tokyo Tower and the Asakusa area to a more quirky night tour to Japanese bars with male companions, known as host clubs, in the Shinjuku area.

The Tokyo sightseeing tours have so far attracted more than 50 million people.

"Even in places which people usually just pass, there are new things to discover if you visit with tour guides," said a Hato Bus official.

The predecessor of the company was established in 1948 when Tokyo was rebuilding after World War II. It started regular sightseeing tours with a mere five tour guides in 1949, and the business has dramatically evolved over the following decades.

Now with about 160 guides, the company attracted some 890,000 people to its Tokyo sightseeing tours in the year through this June and is now gearing up for the Tokyo Olympic and Paralympic Games to be held in 2020.

"There is no doubt (the Olympics) will be a big opportunity, and we hope to receive a boost from it," the official said.

Helped by the previous Tokyo Olympics in 1964, the company's Tokyo sightseeing tour business reached its height by drawing about 1.23 million people the following year, with many going on tours covering venues of the games.

It introduced its trademark yellow buses from 1979 to attract people's attention, but the business deteriorated and remained low in the 1990s following the burst of Japan's economic bubble. The number of tourists for its Tokyo sightseeing tours stood at around 520,000 in 2001.

It was not until 2013 that the tours regained popularity through the opening of the Tokyo Skytree tower among other tourist spots and the number of tourists taking the tours eclipsed 900,000 then for the first time in 20 years.

(Tourists get ready to board a Hato Bus at a stop outside JR Tokyo Station)

With the National Museum of Western Art designated as a UNESCO World Heritage site in 2016 and the Ginza Six shopping complex opening in central Tokyo in 2017, Tokyo continues to offer new attractions, while extensions of shinkansen bullet train services to the Hokuriku and Hokkaido regions have also helped bring more domestic visitors to the capital.

Today, Hato Bus's most popular tour is one that takes visitors onboard an open double-decker bus to scenic areas including Rainbow Bridge and the Kabuki theater in central Tokyo.

A tour of industrial plants at night is also popular, while other night tours are also drawing people as Japanese society gears towards reducing overtime work and enjoying night life under the initiative of the government.

With the Olympics approaching in two years, the company is planning to launch new tours related to the event. It is currently offering some tours in English and Chinese.

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