Duke Ulrich himself died two years later, and was succeeded by his son, Christoph.He had grown up in a Württemberg in turmoil, and wished to rebuild its image.
and made Stuttgart the seat of the Duchy of Württemberg in addition to the County thereof.
All this would be lost to the Württembergs during the reign of his son, Ulrich.
To this end, he once again began a construction boom all over the Duchy under the direction of Court Architect Aberlin Tretsch; Duke Christoph also responded to the increasing made for drinking water by embarking upon a massive hydraulic engineering project in the form of a 2,810 feet (860 m) tunnel to Pffaf Lake, the Glems, and the Nesenbach from 1566–75.
In 1575, Georg Beer was also appointed Court Architect, and he built the Lusthaus.
Eberhard desired to expand the realm his father had built through military action with the aid of the anti-king Henry Raspe IV, Landgrave of Thuringia, but was thwarted by the action of Emperor Rudolph I.
Further resistance by Eberhard I against the Emperor's created Vogts and Bailiwicks as well as the newly appointed Duke of Swabia Rudolf II, Duke of Austria eventually led to armed conflict and initial successes upon Emperor Rudolph I's death in 1291 against the Emperor's men.
In 950 AD, Duke Liudolf of Swabia, son of the current Holy Roman Emperor Otto I, decided to establish a stud farm for his cavalry during the Hungarian invasions of Europe on a widened area of the Nesenbach river valley 5 kilometres (3.1 mi) south of the old Roman castrum.
Nevertheless, the existence of a settlement here (despite the terrain being more suited for that original stud farm) during the High Middle Ages is provided by a gift registry from Hirsau Abbey dated to around 1160 that mentions a "Hugo de Stuokarten." would be the first to begin the many major expansions of Stuttgart under the House of Württemberg.
In the 1457, the first Landtag of the Estates of Württemberg was established in Stuttgart and a similar institution was established in Leonberg.
After the temporary partitions of the County of Württemberg by the Treaties of Nürtingen, Münsingen, and Esslingen, Stuttgart was once again declared the capital of the County in 1483.
The early 1320s were an important one for Stuttgart: Eberhard I moved the seat of the County to the city to a new and expanded castle, At the end of the 14th Century, new suburbs sprang up around Leonhard Church and near the city's fortifications as well.