In a few weeks, I'm heading overseas (Paris, London and unich).  Other than the typical monuments/buildings in those cities, do you guys have any recommendations of other interesting spots to photograph?

I haven't been, but if it were me, I'd try to check out the Louvre (at night), Eiffel Tower, London Eye, London Bridge, Millenium Bridge (with St Paul's Cathedral in the background), & the Interior of the National History Museum (London).

I don't know how far out of the way this is, but the "Out of order" sculpture in Kingston upon Thames makes for an interesting photo.

There's a beautiful terminal I can picture in my head, but I don't recall where it was. If I figure it out, I'll let you know.