Your trip starts in the Siq, a thin canyon that bends and turns like a desert snake. Sunlight comes through the sandstone top, making light and dark shapes on the air, before ending in a moment that takes your breath away. There, shining in the sun, is the Treasury – a building so beautiful, it looks like it came from a story. Its detailed front, a mix of Greek and Nabataean designs, tells stories of a gone people in every old detail.