Question: what to do tokyo 3 days?
Answer: 1 Day 1: Landing in Tokyo, Shibuya and Ueno. 1.1 Shibuya crossing. 1.2 Ueno Park and Ueno Zoo.
2 Day 2: Odaiba, Ginza and Hamarikyu Gardens. 2.1 Odaiba. ... 
3 Day 3: Asakusa, Harajuku, Meiji Shrine and the Tokyo Metropolitan Government Building. 3.1 Asakusa and Senso-ji temple.