The Château de By is a town museum run by the town of Thomery. The building was purchased in 1859 by the French animal painter Rosa Bonheur, who moved her studio there. Aged 37, she was at the height of her popularity and made the building her home and studio for forty years, with pens for her animals in its park. She rebuilt the chateau to make it comfortable and to add a vast neo-Gothic studio room with the space and light she needed. It was in the chateau that empress Eugenie presented her with her Légion d'Honneur in 1865.
The museum mainly consists of objects relating to Bonheur's everyday life (including a Native American costume given her by Buffalo Bill) and the building has remained unchanged since her death in 1899, other than the sale of all the paintings it once contained.References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.