Upon popular (offline) demand, here is the first of many postings on special, time-sensitive offers for cheap travel.
Why not escape to Paris for the weekend or even for the day this summer? Thalys has a special offer right now through June 30: Tickets to Paris for EUR 19 each way. If you prefer to go to Germany, it’s just EUR 10 each way.
Tickets are good for travel between July 7 and September 7, which quite conveniently covers most of the summer sales period in Paris (sales start on June 27 and end on August 4).
More info on the Thalys site. Bon voyage!