The Filipino province of Bohol's most famous tourist attraction, and a regular feature on lists of the top 10 things to see in the Philippines, the area known as the Chocolate Hills is a geological marvel: a vast plain consisting of 1,776 conical hills formed from grass-covered limestone. Near the end of the dry season (April or May), the hills turn a chocolate-brown colour, and start to resemble enormous molehills. On seeing the Chocolate Hills, visitors will at first be incredulous that the preposterously symmetrical hills were not man-made; however, as you climb the observation deck and get a sense of the scale of the area, you will realise that such a feat could not have been achieved by human beings. A UNESCO World Heritage Site, and one of the most alien landscapes you will encounter anywhere on earth, an excursion to the Chocolate Hills is a must for anyone on holiday in the Philippines.

Address: Bohol Province