If you have 24 hours to spend in Launceston, here are some suggestions:
1. Visit Launceston Castle - it's a well-preserved Norman castle and takes about 1-2 hours to explore.
2. Take a walk around the historic town center - this should take about 2-3 hours, depending on your pace. Be sure to stop by St. Mary Magdalene Church and the Southgate Arch.
3. Explore the Lawrence House Museum - this small museum is dedicated to the local history of Launceston and should take about 1-2 hours to visit.
4. Wander around the Eagle House Gardens - these beautiful gardens are a hidden gem in Launceston and are tranquil places to explore. Plan to spend about 1-2 hours here.
5. Take a hike up to the Launceston Steam Railway - this scenic hike takes about 1.5-2 hours and ends at a small train station where you can take a ride on a historic steam train.
Overall, you can easily fill your day in Launceston with these activities, but feel free to mix and match based on your personal interests!