A short walk from Roppongi Hills is the Tokyo Midtown. Tokyo Midtown is nice place for shopping and dining just like Roppongi Hills . Behind the shop buildings, there's a park and in this season, it's very illuminated, worth seeing.
This supposed to be the Christmas tree.
Also, Tokyo Tower is visible from this park.
This park will be illuminated everyday after 5 p.m. until 25th December. Expect large crowds on weekends.
Information about Japan in English is scarce. Here I'll try to write just about every aspects of Japan through my experience living here. Feel free to leave any comments or just click the "clap" button if you like it.