European Parliament in Luxembourg granted a city the right to host a number bodies, including the Secretariat of the Assembly (now of the Parliament). Despite the 1965 agreement however, the Parliament's seat was a source of contention. Wishing to be closer to the activities in Brussels and Luxembourg, a few plenary sessions were held by the Parliament between 1967 and 1981 in Luxembourg instead of Strasbourg – against the wishes of France and in 1981 it returned to holding sessions entirely in Strasbourg. There are a handful of buildings in Luxembourg used by the Parliament. The city hosts the Secretariat of the European Parliament
Strasbourg hotel, and featuring an open-air museum of international contemporary sculpture. The Jardin botanique de l'Université de Strasbourg (botanical garden) was created under the German administration next to the Observatory of Strasbourg, built in 1881, and still owns some greenhouses of those times. The "Parc des Contades", although the oldest park of the city, was completely remodeled after World War II. The futuristic "Parc des Poteries" is an example of European park-conception in the late 1990s. The "Jardin des deux Rives", spread over Strasbourg and Kehl on both sides of the Rhine opened in 2004 and is the most extended (60-hectare)