In our last installment we visited two museums devoted to the Cold War occupation of Berlin and one of its most famous symbols, Checkpoint Charlie. Now we'll get up close and personal with the most hated symbol of the Cold War, the Berlin Wall.

Berlin is a city steeped in history. Of course, you can say the same thing about every other European city I've been through, but it's more true of Berlin than most of them, and some of those pivotal events, like the fall of the Berlin Wall, happened within my lifetime. It's one thing to see a fascinating artifact from centuries ago, but it's really something special to see museum exhibits dedicated to a world-changing event that I heard about on the evening news when I was growing up.

And now after two days looking around Cologne, Düsseldorf, and Roermond, now we get to the part where I actually ran the 42 kilometers/26.2 miles of the Cologne Marathon.

My second day in Cologne was actually spent away from that city, exploring nearby Düsseldorf as well as a Dutch town, Roermond.