People who are interested in History and Archeology will find this trip amazing. There are not many places that can give you so many archeological sites from so many different periods of human history. You will pass thousands of years of history from the Neolithic age, through the Antiquity when the Thracian and the Romans have lived, the Medieval Bulgarian period, and later Ottoman rule. You will learn also, about the liberation of Bulgaria and the history of the XX century.
On top of everything Stara Zagora is one of the most developed cities in modern Bulgaria and has a beautiful center with nice parks and restaurants. This is one of the most interesting day trips that you can book.