A spectacular wonder of nature for thousands of years. The surreal, brilliant white travertine terraces formed by hardened calcium carbonate sediments over time fed by the rich mineral waters are a must visit on your trip to Turkey.  By 190 BC, Pergamum’s King Eumenes II was so seduced by its charms that he established the city of Hieropolos atop the summit of the travertines.  The unique combination of natural and man-made wonders has been made this a Unesco World Heritage site Highlights Visiting the travertines Put your feet in the thermal spring water Hierapolis tour visiting one of the most spectacular theatres in Turkey .