If you have 6 hours or a half day to spend in North Yorkshire, there are several things you can do:
1. Visit York Minster - This stunning Gothic cathedral is one of the most iconic landmarks in the city of York. It usually takes about 1-2 hours to explore the cathedral and its surroundings.
2. Walk along The Shambles - This charming street is lined with timber-framed buildings that date back to the medieval era. It's a great place to wander around and soak up the atmosphere of the city. Plan on spending about 30-45 minutes here.
3. Explore the Yorkshire Dales - This beautiful National Park is known for its breathtaking landscapes and quaint villages. You could take a scenic drive or hike one of the many trails. Depending on how much time you have, you could spend anywhere from 1-3 hours here.
4. Visit the Castle Howard - This magnificent stately home is surrounded by extensive gardens and parkland. It's a popular spot for tourists and history buffs. You could easily spend 2-3 hours exploring the castle and its grounds.
5. Take a steam train ride - The North Yorkshire Moors Railway offers scenic steam train rides through the picturesque countryside. It's a unique way to see the area and you could spend 1-2 hours on the train.
Overall, there are plenty of things to do and see in North Yorkshire, even if you only have a few hours to spare. Choose the activities that interest you the most and explore at your own pace!