Things to do around JOnsen

Some botanical stuff…
https://en.wikipedia.org/wiki/Shinjuku_Gyoen

Hachiko, the loyal dog who’s likeness is enshrined as a statue right outside of Shibuya station.
https://en.wikipedia.org/wiki/Hachik%C5%8D

mandatory tourist picture / video
https://en.wikipedia.org/wiki/Shibuya#Shibuya_Crossing

Get off at the JR Harajuku station to visit Meiji Shrine (inside Yoyogi park) and Takeshita Street.
https://en.wikipedia.org/wiki/Harajuku

most famous shrine in all of Japan!
https://en.wikipedia.org/wiki/Meiji_Shrine

Oh, the teenage angst runs deep here.
https://en.wikipedia.org/wiki/Takeshita_Street

the original “downtown” Tokyo. The TMGB (below) is here.
https://en.wikipedia.org/wiki/Shinjuku

free observatories that offer a great view of Tokyo, day and night!
http://www.tokyometro.jp/en/attractions/metropolitan_govt_bldg

a fun “date spot” with tons of games and other attractions. You can spend a full day here easy.
https://en.wikipedia.org/wiki/Odaiba

Ride the Yurikamome line across the Rainbow Bridge to get to Odaiba.
https://en.wikipedia.org/wiki/Yurikamome

Be sure to get a view of the Rainbow Bridge from Odaiba at night!
https://en.wikipedia.org/wiki/Rainbow_Bridge_(Tokyo)

one of the strangest buildings in all of Japan. The observatory is not free, but offers and *amazing* view of the Tokyo skyline.
https://en.wikipedia.org/wiki/Fuji_Television#/media/File:Fuji_Television_HQ_Building,_Tokyo.jpg

Nerd Mecca…
https://en.wikipedia.org/wiki/Akihabara

second most famous shrine in Tokyo
https://en.wikipedia.org/wiki/Sens%C5%8D-ji