Outside of the Tokyo Metropolitian Government Building is the Shinjuku Chuokoen park. There was a tremendous waterfall that greets you upon entering the park that was a nice backdrop for the bazaar of yard sale vendors that were carefully organized throughout the square. This makes sense because the Tokyoites don't have garages or yard with which to have sales, so why not all gather in one place and try to dump old clothes, or sell things that you have picked up along the way. There was a wide variety of things for sale and I picked up a few toys for the girls for a fraction of the price of something at a store. The TMG was fairly desserted, save the tour groups that were travelling up to the 45th floor to catch a bird's eye view of the bazaar in the square.

The selection of goods at the bazaar ranged from someone's personal belongings that were just extras to folks that looked like they were involved in estate sales. It was an interesting mix and not much different than what you would see in the U.S., yet again, this is much more organized becuase of the limited space that you have available in the big City.
Here's a few shots from the ground and then one from the tower.