Enjoy the flexibility of a GPS-enabled audio tour of Heidelberg's Altstadt whenever you're ready to take it. Erin McGann, history geek, writer, and Heidelberg resident, takes you on a walk through the winding streets of the picturesque Old Town. Erin lets you in on some local secrets including stories about the dramatic floods that plagued the residents for hundreds of years, the secrets of the German street names, what the pretzel carvings on the Church of the Holy Ghost mean, why there is a student prison, and stories about the residents of the famous castle. Download the tour, pop your phone in your pocket, and let this enthusiastic Heidelberger resident take you around the town she loves.