Ludwigsburg Palace in Ludwigsburg, Baden-Württemberg, Germany

Ludwigsburg Palace, nicknamed the "Versailles of Swabia" is a 452-room palace complex of 18 buildings located in Ludwigsburg, Baden-Württemberg, Germany. Its total area, including the gardens, is 32 ha (79 acres) - the largest palatial estate in the country. The palace has four wings: the northern wing, the Alter Hauptbau, is the oldest and was used as a residence of the Duke of Württemberg; the east and west wings were used for court purposes and housing guests and courtiers; the southern wing, the Neuer Hauptbau, was built to house more court functions and was later used as a residence.
Thanks and credit to Google Earth Studio for this aerial video.

[@Piggybjorn]

all of these duchies I have only learned from internet, about non reigning royal family in Germany or from Germany. One of the oldest princess name Alexandrine of Baden, she became queen Victoria of England's sister in law. Meanwhile her youngest sister became Emperor Alexander II's sister in law.

[@ChileThailandtravel]

Good information from you my friend. Thanks.