If you have 6 hours or a half day to spend in Glamis, there are several things you can do:
1. Visit Glamis Castle: This historic castle is the childhood home of the Queen Mother and has a rich history dating back to the 14th century. A tour of the castle takes about 1 hour and 30 minutes.
2. Explore the Angus Glens: Glamis is a gateway to the Angus Glens, which offer stunning landscapes and outdoor activities such as hiking and cycling. Depending on how much time you have, you could take a short hike or drive through the glens to admire the views.
3. Visit the village of Glamis: The village itself is small but charming, with several historic buildings and a few shops and cafes. You could spend about an hour walking around and exploring.
4. Visit Kirriemuir: This nearby town is the birthplace of Peter Pan author J.M. Barrie and has several attractions related to him, including a museum and statue. It takes about 15 minutes by car to get there from Glamis and a visit to the museum would take about 1 hour and 30 minutes.
Overall, you could easily spend a half day in Glamis and its surroundings, depending on your interests.