The opposite of circle tours could be diverse or customize tours. When you go for a customize tour, you can decide where you want to go and how long you want to stay in each place. Also, you can choose the activities that suit you the best. Diverse tours offer experiences that are different from the conventional sightseeing tours. You can go to remote areas, trek to the mountains, or try various cuisines. On the other hand, circle tours follow a fixed itinerary, and you have to follow the schedule. It may not suit everyone's preference, and some people might want to explore the world in their way.