The Chocolate Hills are Bohol's most famous landmark: more than 1,200 near-conical limestone hills rising from a flat plain in the interior of the island, all roughly the same height (30–50 metres). The effect, especially from the viewing platform at the main viewpoint in Carmen, is genuinely otherworldly — the hills recede in perfect brown rows toward the horizon, looking more like a mathematical rendering than a natural landscape.
The viewpoint is about 55 km from Tagbilaran and takes around 90 minutes by road. Most visitors come by scooter or motorbike, which is the best way to explore Bohol's interior. The area around the hills also has the Tarsier Sanctuary (Corella), where the tiny nocturnal primates can be seen at close range in a responsible setting, and the Loboc River cruise, which is a popular but somewhat touristy lunch boat. The hills themselves are worth the trip even without the supporting attractions.