Though people of various cultures have lived on the Arabian Peninsula over a span of more than 5,000 years, the harsh climate historically prevented much settlement, except in major oases. Most of the great empires of the ancient world traded with the Arabian Kingdoms that commanded the important spice trade routes in the peninsula. In the south, Najran with its mud-brick forts dotting the palm oases is one of the ancient caravan stops that you will visit. The country’s main attraction and its hidden treasure is the UNESCO World Heritage site of Madain Saleh. It is considered second only to the famous Petra in Jordan in terms of Nabatean architectural remains. Colorful markets, desert landscapes, coral reefs, rock engravings, ancient monuments, the country has so much to offer to those who choose to venture in it & explore a nation that is seldom exposed to the eyes of the outsiders.