If you're spending some time in Guillemins, Gare de Liege-Guillemins and Carre d'As Bowling are top sights worth seeing.
If you're spending some time in Outremeuse, Liege Aquarium-Museum and Gretry Museum are top sights worth seeing.
If you're spending time in Le Carré, you might enjoy its historical sites and shopping. If you've got time to venture a little farther, you can make a stop by Forum de Liege or Royal Opera of Wallonia.
When in Amercoeur, you can plan a visit to Theatre de Liege and Park of the Boverie, some noteworthy sights in the nearby area.
Saint-Laurent might not have many top sights, but Outremeuse and Royal Opera of Wallonia are two attractions nearby that you can check out.