It says "They were here before". Imagine something like the Griswold family while on vacation to Europe. Visiting the thing on the top of the page. Before that, they had visited the thing on the bottom. Think about what have changed between the two visits.
can you elaborate please, I've looked up the National Lampoons euro vacation locations but they do the Eiffel Tower before Rome, also the dialing code for Italy plus the country\airport code doesn't work
you have to use the same governing body's abbreviations. Go to Wikipedia for CDGA, look at who abbreviated it the way out is in the clue, then do the same with Rome's. Same thing with country code. Did that help? I think it makes more sense inherently to someone from Europe.