After years of flitting back and forth, and always putting it off, I finally got the chance to visit Tokyo Tower. I love seeing it light up the sky on my walk to the station, looking like a vaguely geographically confused Eiffel Tower. It seems to placidly observe as taller buildings crop up around it, as if it were above it all.
Not surprisingly it is rather crowded, but you can avoid the worse of the lines by taking the stairs most of the way (it only takes 10 minutes, with stops for photos). The bright orange beams are quite striking. Dusk is definitely the best time to visit, so you can watch the sun set over the cityscape, and then enjoy the glittering, jewel-like appearance of Tokyo at night.
Eat Your Greens, which has intrigued me for a while.