Why? Maybe just because I stayed nearby for some time... It's a typical Japanese commercial street, filled with stores, restaurants, hotels and pachinko parlors, with many narrow buildings, covered in vividly colored billboards. For me, born in a mostly gray city, it's delighting to stroll on such a street...
Here's a somewhat aerial view, from the height of the Ueno Park southern entrance:
EXIF info:
Nikon D90
Lens: VR 18-55mm F/3.5-5.6G
Focal Length: 55mm
Aperture: F/5.6
Shutter Speed: 1/800s
ISO Sensitivity: ISO 200