Free. This is really the best place to come to Edinburgh. Compared to Edinburgh Castle crowded like the Shanghai Expo, it is beautiful and quiet. The hill was formed 340 million years ago when the volcano erupted, the park started in 1724, and we only had to climb 143 steps to enjoy the endless view overlooking Edinburgh. It’s just a hill, but there are many monuments, especially this national monument. There are many people climbing up, the scenery should be more beautiful, otherwise why are people happy to climb up and don't want to come down?