Hex mansion or palace was built in the 1770s by the Liège architect Etienne Fayen for the Prince-Bishop of Liège, Franz Karl, Count of Velbrück (1719-1784). As a humanist and nature-lover, the prince-bishop chose this spot in the scenic Haspengouw region on which to build his country house and to lay out a number of gardens, including a Chinese garden, a kitchen garden and a rose garden. Later he added one of the first landscaped parks on the European mainland, inspired by the English landscaping of Capability Brown. The bishop died here in 1784.
The estate is now in the private possession of Count Ghislain d' Ursel, since the third generation. They keep the estate in shape and restore the valuable gardens and heritage.
The rose garden contains an exceptional assortment of about 250 varieties, of which the oldest were present in the original garden. Since 1970 Countess Michel d'Ursel restored and increased the original formal Renaissance garden laid out by Prince Bishop Velbruck in 1770. In 2003 the Garden of Roses was granted the Award of Garden Excellence by the World Federation of Rose Societies.
The gardens and the park are open to the public on selected weekends during the summer months.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.