There is no little enemy

I took this photo at the Castle of São Jorge in Lisbon, Portugal. The castle is visible from a huge square nearby my hotel, so I thought I could get there very easily without a map. Then, I started to walk toward the castle above. But it wasn't exactly easy to find a way to the castle. People who had a mobile map also had gotten lost and asked me a direction. Many tourists had the same question; Do you know how to get to the Castle of São Jorge? I think it sounds like a nice castle. It is often said that there is no little enemy, so the very complicated way to the castle seemed like protecting the castle from enemies.