multi-billion-Deutsche-Mark bankruptcy in 1994. Architecturally important in its time was the ("Meeting House") built in 1955 for the headquarter of Catholic aid organisation Aid to the Church in Need. The health spa, built in 1977, was controversial at the time because of its blue-orange colour scheme. Former Grand Duke of Luxembourg Adolph von Nassau's stately home is known as the and houses now the court (Amtsgericht Königstein). The Villa Rothschild, built in 1888 as a summer residence for Wilhelm Carl von Rothschild, was used in 1948 and 1949 as a conference venue by the Conference of Ministers-President to resolve disputed questions between the allied military governors and the Parlamentarischer Rat. Today it is used as a Hotel. At the foot of the ("Castle Mountain"), surrounded by a park through which flows the Woogbach and adjoining which is the Woogbach Valley is found Saint Angela's Ursuline Convent (), founded in 1884, and owning a like-named state-recognized private school. Königstein is likewise well known for its idyllic Old Town. Its exclusive residential areas (also in Falkenstein) are mainly marked by Art Nouveau and its -influenced offshoots as well as 1960s Chic (bungalows). Lot sizes, however, are not comparable to those in other towns owing to new town planning and the building plans following therefrom. Museums The Castle and Town Museum () is found at the historic Old Town Hall () Education Schools There are in Königstein various schools, among them three Gymnasien: the state Taunusgymnasium (formerly Taunusschule), the private St. Angela Schule and the private Bischof-Neumann-Schule. Primary schools Grundschule Königstein Grundschule Falkenstein Grundschule Mammolshain Grundschule Schneidhain Kid's Camp Königstein Secondary schools Taunusgymnasium Königstein, Gymnasium Friedrich-Stoltze-Schule, Hauptschule and Realschule Bischof-Neumann-Schule, private school, state-recognized St.-Angela-Schule, private school, state-recognized Philosophisch-Theologische Hochschule Königstein (1949–1978) On 29 April 1949, a Königstein Philosophical-Theological College was founded in Königstein as a self-standing Catholic university, and acknowledged by the Hessian state government. Bishop Maximilian Kaller – who was the first bishop with special authority over ethnic Germans who had been driven out of lost German territories at the end of the Second World War – appointed philosophy professor Erich Kleineidam to the new institution in late May 1947 as a professor. In 1948, he also became head of the seminary, and in 1949 rector of the Königstein Philosophical-Theological College. Besides Kleineidam, others who taught at the ecclesiastical university were Anton Janko, Philipp Schäfer and Leo Scheffczyk. Among well known graduates