Walking through the ancient Nabataean city of Petra can be a challenge. A tour begins with a 20-minute walk down a rocky slope through the narrow Siq to get to the famous Treasury known to Indiana Jones fans. But that is just the beginning of a journey to a site that can take weeks to explore. Skip the heat, the cold, the dust, and the glare with a virtual tour of an archaeological wonder by clicking on the site markers on the map.