Looking on a city centre map of Lille, I spotted a very interesting looking 5 point Citadelle at the edge of the old town, as handily shown by OSM: I wandered over there, and saw some impressive ...
As per the answers to Travelling by train in mainland Europe, will I save money by booking my tickets early?, you should normally book your Eurostar tickets in advance, ideally a few months out ...
How close to Kortrijk / Courtray can you get with a Lille public transport ticket (and still make it there)?
A few people have mentioned to me that the Belgian town of Kortrijk / Courtray is nice to visit as a day trip from Lille, and with a good eye can apparently (almost?) be seen from the clock tower of ...