Maastricht was an afternoon/evening trip for me and my buddy while staying in Aachen. We stayed in Aachen for 4 nights.
- Day 1: walk around Aachen, Aachen Christmas market
- Day 2: morning walking tour of Aachen & Valkenburg (NL) for its Christmas markets in caves
- Day 3: day trip to Bastogne for Battle of Bulge/Siege of Bastogne history tour with our excellent guide Peter
- Day 4: Aachen Rathaus and Dom late morning/early afternoon followed by "day trip" to Maastricht mid-afternoon to late evening
We went to Maastricht to see guide Peter play drums at a gig for his Louisiana-style jazz band at a small cafe/pub in Maastricht (a favorite activity of the trip!) and to visit to Maastricht's Christmas market. Maastricht was gorgeous -- very nice architecture and very nice waterways (the Meuse River and the city's canals). It has some other things to keep one busy like "caves" of its own -- spaces mined for rock that now have a cave appearance + some other sites. We liked our short time there quite a lot.
When I told the guide who gave the morning tour of Aachen on Day #2 about going to Valkenburg, she told me, "That's a nice place to go, but I would really encourage you to go to Maastricht. It's exceptional!" I already knew we were going to the jazz band performance, but I thanked her for the suggestion.
And if you would like a little more detail on our trip, here's the trip report: https://community.ricksteves.com/travel-forum/trip-reports/the-young-adult-and-i-2025-christmas-markets-in-germany
If you would like info on Peter as guide: https://maastrichtguide.com/en/