Groningen is a charming Dutch university town with plenty of things to do and see. Here are some of the top attractions and activities to consider:

1. Groninger Museum: This museum features a wide range of modern and contemporary art, as well as exhibitions on design, fashion, and photography.

2. Martinitoren: This tower is the highest point in Groningen and offers stunning views of the city. Visitors can climb the tower to the top.

3. Prinsentuin: This beautiful garden is located in the heart of Groningen and is a great place to relax and enjoy the scenery.

4. Vismarkt: This is a popular square in the city center that is home to a variety of shops, restaurants, and cafes.

5. Museum aan de A: This museum is the successor to the Noordelijk Scheepvaartmuseum and features exhibits on the maritime history of the region.

6. NonFiction Photo: This gallery showcases contemporary photography and is located in a historic building in the city center.

7. Walking Tour of Groningens Old Town District: Take a stroll through the charming streets of Groningen's Old Town District and admire the historic architecture.

8. Ice Skating on Paterswoldsemeer: During the winter months, visitors can strap on a pair of skates and hit the ice on Paterswoldsemeer, one of the city's largest lakes.

9. Forum Groningen: This new building in the heart of the city center is a meeting place for everyone with a certain curiosity in today’s world and tomorrow’s opportunities. It features exhibitions, cinemas, a smartlab, cafes and restaurants, a city library, and a rooftop cinema with a phenomenal view.

10. Hofjes: These historic courtyards are hidden oases of quiet in the city center and are a great place to relax and enjoy the scenery.

In addition to these attractions, Groningen is known for its great shopping experiences, dining scene, and festivals throughout the year.