Take a day trip to Delft, Netherlands. Get a free tour of the inside of the windmill. Visit the Old Church and the New Church. The New Church is the second highest church in Netherlands. Climb 376 steps to the top of the clock tower. I did it in the early November. It is very difficult already. I think climb the clock tower in the hot summer day is even more difficult. However, you will be rewarded with the magnificent view of Delft.