Gaudy cabaret night – You may have to pay Robot Restaurant a few visits before being able to take everything in. It's a sci-fi cabaret club where big robots meet ninjas meet dancers in sparkly bikinis. Flooded with neon lights, mirrors and golden seashell-shaped armchairs, the restaurant in the Kabukicho area of Shinjuku cost JPY10 billion (or $10 million) to construct.
Tokyo Tower – Before the taller and newer Tokyo Skytree was built, Tokyo Tower was the tallest man-made structure in Japan. Erected in the 1950s, the elegant red and white building is still an icon of the Japanese capital's skyline.
Indoor firework show – There's a Main Observatory deck halfway up the tower and a Special Observatory 100 meters higher. Special events are held throughout the year: Its spectacular "Milky Way Illumination" (pictured) runs until August 31.
Ueno Park – The spacious and central Ueno Park is the most popular recreational park in Tokyo. It's home to several temples and museums as well as Ueno Zoo. It's also where Pokemon Go trainers gather to catch rare Pokemon. A public viewing site was recently set up to screen the Olympics.
Harajuku – Harajuku is where Japan's youth subcultures gather on Sundays to see and be seen. It might just be the most fashion-conscious place on the planet.
Shopping mecca – Boutique cafes and shops aside, Harajuku is also home to Laforet fashion mall: a mecca for Gothic Lolitas and Gyaruo boys as well as other avant garde fashionistas.
Japanese houseboat – Riding on a yakatabune, a traditional houseboat, is one of the best ways to see Tokyo Bay. A few dozen yakatabune boat companies offer river tours that serve traditional dinners and host karaoke sessions.
Traditional river tour – A yakatabune is fitted with traditional tatami floors. There are about 100 yakatabune available for private hire in Tokyo, according to the Tokyo Yakatabune Association.
The Imperial Palace – The Imperial Palace, the current residence of Japan's royal family, sits in the center of Tokyo. Guided tours are available throughout the year, although the inner grounds of the palace are only open on special occasions, when the royals greet the public from the balcony.
Edo Castle – The palace also incorporates Edo Castle. Founded back in 1457, this historic site was the seat of political power during the Edo era.
Sacred Mount Fuji – Considered a sacred mountain in Japan, Mount Fuji is an active volcano about 100 kilometers from Tokyo. At 3,776 meters high, it's the highest mountain in Japan and makes a dramatic backdrop for many Tokyo photos.
Legendary crossing – Tokyo's famous scramble intersection is located in front of Shibuya Station. It's a major shopping, entertainment and nightlife district.
Spring party, Japan-style – Every spring, Japanese people will gather under sakura trees for hanami -- a traditional spring party in Japan to enjoy picnics and cherry blossom viewing. Ueno Park is a popular hanami spot for Tokyoites.
Rooftop soccer – More than just a place to put your soccer boots on, Adidas Futsal Park -- on the rooftop of a department store in Shibuya -- is a pitch with a view.
Most populous metropolis – With more than 37 million residents -- about 17 million people more than Beijing and New York City -- Tokyo-Yokohama has been the world's largest metropolis for about half a century.