You can spend an afternoon studying the exhibits at Blekinge Museum during your trip to Galgamarken-Trossö. Amble around the area's marina or experience its museums.
After visiting Church of the Holy Cross, make a plan to see the other sights and activities in Ronneby. While you're in the area, wander around the parks.
Ronneby Brunnspark is 1 mi (1.6 km) from central Ronneby, why not stop by during your stay. Want to stretch your legs some more? Head to Naturum Blekinge, just a short walk away.