At the border triangle, you can leave Poland and enter the Czech Republic via a wooden bridge. Rest areas have been set up on both the Polish and Czech sides. Currently, there is no way to cross into Germany at the border triangle, but a bridge is being planned.
From the Polish and Czech side, the tri-border region was beautifully designed, the bridge from the German side to Poland and the Czech Republic is really missing. The German side looks pathetic.
Poland, the Czech Republic and Germany meet at this border triangle. Actually, a bridge should connect all three countries. So far there is only one bridge between Poland and the Czech Republic.