The first photograph taken with a Leica camera, by its inventor Oskar Barnack, is of a scene in the town of Wetzlar, home of Leica. The scene, the Eisenmarkt, looks almost the same today as it did then, over a hundred years ago. So, naturally, any self-respecting Leica photographer wants to stand in the same spot that Barnack did, and take the same photo.
Here's evidence that Leica's Oskar Barnack didn't sit twiddling his thumbs after cooking up the 35mm miniature camera. Far from it, he was beavering away on the Leica Vision Pro, virtual reality for the start of the war in 1914...