#google trip
I would recommended using Google Trip if you don't have any idea where to go and don't wanna miss any important landmarks. For Belgium, I actually have no idea what Belgium is famous of and decided to visit Brussel simply because it's so near to Amsterdam.
The features of google trip really suit lazy travelers like me:
#recommended itinerary
Google trip would generate a few itinerary based on the rate and review of other users, distance and nature of the landmarks (art, architecture or photography)
You can also make your own travel plans
#ticket and reservation
Most importantly, you can save your tickets and reservation here as well. If you booked your tickets online with your google account, they will automatically save your tickets here, like Booking.com, Flixbus and Ryanair.
They support offline usage.
They will update the travel trip automatically according to your records. I have booked a flight ticket to Reykjavik recently so they will generate the related suggestions to me.
#shopping area
Maybe I didn't have much time to explore here. The buildings here is like Prague. I was surprised that there are so much people (perhaps even more than the one in Amsterdam) in shopping streets. There are so many brands and even some Japanese brands like Uniqlo.
People are waiting for shopping in Primark before its opening hours on Sunday
Unless going to attractions which are out of city center like Mini Europe, it's not necessary to have a pass here. All attractions are close and within walking distance