What to do in Tokyo for free?
I would love to discover everything in Tokyo, but as this city is quite expensive, the money do not always follow. What can you recommend me to do for free during weekends alone or with friends?
Tokyo Metropolitan Government Building has an observation deck for free, gives a fantastic view of the City, and sometimes Mt Fuji too, if you're lucky. Places like Ueno Park, the beach at Odaiba, the life-size Gundam in front of DiverCity is a good place to stroll and chill at your own pace too. Todoroki Valley in Setagaya Ward is also a very nice place for a refreshing walk amidst the bustle of the city.
Shrines and many temples are free, but so are a few of the museums in the city - like the Yebisu Beer Museum or the Sumo Museum. Or find out if something is in bloom - the azaleas at the Nezu Shrine in April or the cherry blossoms along the river in Meguro in late March.
Yebisu Beer Museum is free (tours/samples require a small fee) as well as tours of any of the Asahi/Kirin/Suntory beer factories (complete with free drinks/snacks). For Tokyo, you have the Suntory factory in Musashino (booking in Japanese though).
Tsukiji Fish Market is also completely free, although it is recommended to get there very early in the morning (hence I have yet to visit!)
Parks such as Ueno and Yoyogi are popular year round. They feature many free attractions with also areas to spend money if you choose. I recommend walking the streets to get to know any city. Akihabara, Harajuku, Meiji Shrine, Ginza, Shibuya, Shinjuku-- every where you can walk and take in the sites.
If you have kids, check out the Fire Museum. It's fun for adults too. There's almost always some festivity going on at Yoyogi Park on weekends so do check that out. We like to people watch in Harajuku and Omotesando. Nearby Meiji Jinggu (shrine) is a green oasis in the middle of the city and is 100% free to go to and stroll. Asakusa has a nice shopping street and is also a popular free tourist place to visit.
As a traveller to Tokyo, I am very excited to find several attractions that are actually free of charge. Be sure to head over to the Tokyo Metropolitan Government Building. It has a free observation deck for tourists. If you would like to explore the cultural side of Tokyo, many shrines and temples are actually free. For example, Sensoji in Asakusa. Personally, I like the shrines and temples in the area around Ueno!