The Khajuraho group of monuments has been listed as a UNESCO World Heritage Site, and is considered to be one of the "seven wonders" of India. The Khajuraho temples are made of sandstone. The builders didn't use mortar: the stones were put together with mortise and tenon joints and they were held in place by gravity. This form of construction requires very precise joints. The columns and architraves were built with megaliths that weighed up to 20 tons.
The postmark depicts Laxman Temple.