Nothing. It was just a parking lot:
<IMG SRC="http://www.sky.s64.pl/home/Plany/zt03.jpg" ALT="FailText" BORDER=x WIDTH=100%
photo by clerykucjo. hosted by WaRR.
That bigger parking lot you can see further back will also be built over in the future -- the only reason an investor hasn't been able to yet is because ownership of parts of the plot is still in dispute.