[godwine]

Shinjuku - Shopping mostly
Harajuku (Meiji Shrine) - A bit of sight seeting and a bit of shopping
Shibuya - Shopping mostly
Asakusa - Sight seeing, and a bit of shopping
Akiba - Both sightseeing and shopping
Tokyo Tower - Sightseeing
Roppongi Hills - Shopping
Odaiba - Both sightseeing and shopping, also a nice public bath that you can experieince
Yokohama - Sightseeing and shopping
Kamakura - Sightseeing

check out japan-guide.com they will have a more elaborate description as I don't want to get into details here