If you have 7 days to spend in Barrow-in-Furness, here are some suggestions on how to spend your time:
Day 1: Visit the Dock Museum which is dedicated to the history of the town's shipbuilding industry. It will take you around 2 hours to explore the museum thoroughly.
Day 2: Go to South Walney Nature Reserve to see the seabirds and seals. You can take a bike to the paths or simply walk. It can take around half a day depending on how long you want to spend there.
Day 3: Explore the ruins of Furness Abbey, which date back to the 12th century. It will take you an hour or two to admire its beauty and history.
Day 4: Take the Furness Railway to Lakeside for a steam train ride and Lake Windermere. You can spend the day in Windermere, the largest natural lake in the country. This tour will take the whole day.
Day 5: Visit Piel Island, a small island with a castle which dates back to the 14th century. Of course, you may also enjoy the many seabirds that live on Piel Island. It will take a half-day once you're off from the boat.
Day 6: Take a tour around Dalton Castle, home to the Furness Abbey, which has been renovated for visitors. Allow an hour to fully explore it.
Day 7: Relax at the nearby sunny beaches of Cumbria, go swimming, have a picnic, or simply enjoy the coastal view. You can do this the whole day or as long as you want.
For places to stay in Barrow-in-Furness, there are several hotels and Bed & Breakfasts that you can choose from like The Duke of Edinburgh Hotel, The Furness Railway Hotel or The Charnwood Guest House, among others.