The top picture you can see the L'Aqua and Tokyo Dome areas to the bottom right.
Also of interest is the large centreless ferris wheel and roller coaster that runs through it.
The bottom picture looks slightly towards Ueno in the distance.
Suidobashi (and Korakuen)itself is famously home to such places as the Kodokan(mecca of Judo) and the Tokyo Dome, home of the baseball team, Tokyo Giants.
It's a busy place during the day and is a business hub as well as having some large high schools and universities around the area.
At night, it's quiet.