Biebrich Palace

Biebrich Palace is a Baroque residence in the borough of Biebrich in the city of Wiesbaden, Hesse, Germany. Built in 1702 by Prince Georg August Samuel of Nassau-Idstein, it served as the ducal residence for the independent Duchy of Nassau from 1816 until 1866.
Count Georg August Samuel of Nassau-Idstein, appointed Prince in 1688, wanted a more impressive seat of authority than his palace in Idstein in the Taunus. He moved first to Wiesbaden, and later to Biebrich . In the immediate vicinity of the Rhine, opposite the Biebricher Wörth, he began construction of a chateau. The structure was designed by the Baroque architect Julius Ludwig Rothweil and was completed in 1702. It survives today as the West Pavilion of the palace. Only four years later, a duplicate structure was built only 86 meters to the east. While the West Pavilion was reserved for the prince and his entourage, the East Pavilion served his wife.

Wikipedia