Lost in the Past

There is a legend that says many years ago there was a medallion that allowed to open any door that leads to the future or past. Many treasure hunters tried to find the medallion but they could not. To this day, no one knows if it's true or not, but they say that this medallion was inherited generation after generation by a family that collected antiques for many centuries. To prove it, you will have to travel to the past and remember that the only way to return will be to find the medallion and make it work. Do you dare to try? But be careful or you will stay forever in the past!