1. Cotswold Way Walk
2. Overview: Embark on a scenic hike along the Cotswold Way, a 102-mile trail that winds through the quintessential English countryside. Begin your day at the charming village of Painswick, known as 'Queen of the Cotswolds', and wander amidst its honey-colored stone buildings and serene gardens. The route promises breathtaking views across the Severn Vale and a chance to explore the area's rich flora and fauna.
3. Duration: Approximately 4 hours for a leisurely section of the trail.

4. Afterwards: Relax with a traditional afternoon tea at one of the many tearooms in Painswick before heading back to Gloucester.

5. Bibury and Bourton-on-the-Water

6. Overview: Visit Bibury, often cited as the most beautiful village in England, with its iconic Arlington Row, a series of weaver's cottages dating back to the 14th century. Continue to Bourton-on-the-Water, fondly called the 'Venice of the Cotswolds' due to its picturesque bridges spanning the gently flowing River Windrush. Stroll along the riverside, explore the model village, and indulge in some retail therapy at the local boutiques.
7. Must-Visit Attraction: Birdland Park & Gardens, home to over 500 birds including penguins and parrots.

8. Lunch Recommendation: Try the locally sourced pub fare at The Swan in Bibury.

9. Tewkesbury Abbey and Medieval Town

10. Overview: Travel back in time to Tewkesbury, renowned for its impressive abbey dating from the 12th century. The abbey boasts one of the largest Norman towers in existence and an exquisite collection of medieval stained glass. Explore the town's warren of narrow alleys and half-timbered houses, which retain a distinct medieval charm.
11. Historical Note: Learn about the Battle of Tewkesbury, a pivotal conflict in the Wars of the Roses, which took place in 1471.

12. Dining Option: Savor a hearty meal at The Royal Hop Pole Inn, a historic coaching inn mentioned in Charles Dickens' "The Pickwick Papers."

13. Stroud Farmers' Market and Woodchester Mansion

14. Overview: Start your morning at Stroud Farmers' Market, a vibrant hub of local produce and artisan crafts held every Saturday. Later, venture to the enigmatic Woodchester Mansion, an unfinished masterpiece of Victorian Gothic architecture nestled in a secluded valley. Its eerie, abandoned state offers a unique insight into construction techniques of the era.
15. Market Tip: Arrive early to beat the crowds and sample some of the finest cheeses and baked goods.
16. Evening: End the day with a stroll around Stroud's independent shops and galleries before returning to Gloucester.

Each of these day trips from Gloucester offers a unique slice of English heritage and natural beauty, making them perfect additions to any traveler's itinerary.