Advice Last-Minute Trip to Belgium from CDG in February - Tips?

Hey everyone, my wife and I just decided on a very last-minute trip to Belgium from CDG this February. We're flying in and out of CDG and are looking for some advice on making the most of our trip. We're interested in exploring the cities, trying out the local cuisine, and maybe catching some of the winter events if there are any. Any recommendations on must-visit places, hidden gems, or tips for traveling in Belgium during February would be super helpful. Also, any advice on the best way to get around from CDG to Belgium? Looking forward to your suggestions!