Kanto is home to the big cities of Tokyo and Yokohama and the ancient capital of Japan, Kamakura. So, you could brave the frantic streets of Tokyo to do your shopping for a day and then head out to an onsen for a well deserved rest.
There are many onsen to be found in the scenic Izu and Hakone areas that are an easy train ride from the bustling cities.

Not sure which area you want to go to? For more information, check out the links below.