What a view. Departing from Haneda Airport this March, you have a stellar perspective onto the worlds largest city. Was a beautiful sunny day, with first cherry blossoms appearing in all the parks. It just does not seem to end. And Mount Fuji ( 富士山) looks like it was almost part of the city (while being 150km outside).
It took me about 8 months living in Tokyo to finally get see the infamous Tsukiji fish market near the Tokyo bay. After visiting it, I now know why everyone suggests this should be on top of your Tokyo bucket list. Take some time in the early morning hours to freely roam the area. Through all the small pathways with hundreds of merchants, each of them with different kinds of fish. You will see everything from the tiniest snails, to gigantic Tuna (really: you would not believe how huge they are. It takes a big Katana (日本刀) to get the soft red meat, so smooth it will melt on your tongue, out of this monster of an animal. One of them will cost a merchant many thousand ¥ to buy themselves, so you could see the pride on some of their faces when they had one of them in their tiny merchant booths.