If you have six hours or a half day to spend in Inner London, here are some suggestions and approximate time it takes to visit each:1. Visit the British Museum - 2 to 3 hours.2. Take a stroll in Hyde Park - 1 to 2 hours.3. Explore the Tower of London - 2 to 3 hours.4. Enjoy a view from the London Eye - 1 hour.5. Visit the Houses of Parliament and Big Ben - 1 to 2 hours.Keep in mind that these are just suggestions and the time it takes to visit each can vary depending on your interests. Also, consider the time it takes to travel between each destination and plan accordingly.