Riddler's tube map
Some people collect stamps, coins or classic cars... I collect Places.
This map is a graphical representation of where Riddler has been on his travels. The world is a big place, so it may take a while to download.
You will have to scroll about a bit to see it all. Roughly speaking the Americas are on the left, Europe & Africa in the middle and the Far East, Australia and Pacific on the right.
Here is another way of looking at where I've been. There's a lot of places left to see.