Rhin and danube roundabout

Boulogne-Billancourt (French pronunciation: ​[bulɔɲ bijɑ̃kuʁ]; often colloquially called simply Boulogne, until 1924 Boulogne-sur-Seine) is a commune in the western suburbs, and 8 km (5.0 mi) from the centre, of the French capital Paris. Boulogne-Billancourt is a subprefecture of the Hauts-de-Seine department and the seat of the Arrondissement of Boulogne-Billancourt.

The International Bureau of Weights and Measures (French: Bureau international des poids et mesures) is an intergovernmental organization that was established by the Metre Convention, through which member states act together on matters related to measurement science and measurement standards. The organisation is usually referred to by its French initialism, BIPM.

Saint-Cloud (French pronunciation: ​[sɛ̃ klu]) is a commune in the western suburbs of Paris, France. It is located 9.6 kilometres (6.0 miles) from the centre of Paris. Like other communes of Hauts-de-Seine such as Marnes-la-Coquette, Neuilly-sur-Seine or Vaucresson, Saint-Cloud is one of the wealthiest towns in France, ranked second in average household income among communities with 10- to 50-thousand tax households.

The manufacture nationale de Sèvres is one of the principal European porcelain manufactories. It is located in Sèvres, Hauts-de-Seine, France. It is the continuation of Vincennes porcelain, founded in 1738, which moved to Sèvres in 1756. It has been owned by the French crown or government since 1759, and has always maintained the highest standards of quality.

La Seine Musicale is a music and performing arts center located on Île Seguin an island on the Seine river between Boulogne-Billancourt and Sèvres, in the western suburbs of Paris, France. In 2009 the lead coordinating architect for the project was named as Jean Nouvel although individual buildings have subsequently been commissioned from a range of international architectural practices.

The Musée Albert-Kahn is a departemental museum in Boulogne-Billancourt, France, at 14, rue du Port, including four hectares of gardens, joining together landscape scenes of various national traditions. The museum includes historic photographs and film collected by the banker and philanthropist Albert Kahn.

Sèvres – Cité de la céramique (Sèvres City of Ceramics) is a French national ceramics museum located at the Place de la Manufacture, Sèvres, Hauts-de-Seine, a suburb of Paris, France. It was created in January 2010, from the merger of the Musée national de Céramique-Sèvres and the Manufacture nationale de Sèvres.

The Château de Bellevue was a small château built for Madame de Pompadour in 1750. It was constructed on a broad plateau in Meudon, above a slope overlooking the Seine to the east, but was demolished in 1823 and little remains.

Pavillon de Breteuil is a building located in Saint-Cloud, France near Paris. It was inaugurated by Louis XIV in 1672. It is in the park of the former royal Château de Saint-Cloud, which was destroyed in 1870.The Pavillon du Mail became known as the Pavillon de Breteuil in 1785. The building had been used since 1875 by the International Bureau of Weights and Measures (French: Bureau international des poids et mesures).

The arrondissement of Boulogne-Billancourt is an arrondissement of France in the Hauts-de-Seine department in the Île-de-France region. Since the January 2017 reorganization of the arrondissements of Hauts-de-Seine, it has 8 communes.