Free Walking Sightseeing Tour #1 in Boulogne-Billancourt, France

The bibliothèque Marmottan, located in Boulogne-Billancourt, is a public library bequeathed in 1932 to the Académie des beaux-arts by its founder Paul Marmottan.

Wikipedia: Bibliothèque Marmottan (EN)

Hôtel Guimard is an Art Nouveau town house built in 1909–1912 by Hector Guimard for use as his home and architectural studio, with a studio for his wife, the painter Adeline Oppenheim Guimard. It is considered one of the best surviving examples of his mature style. The house is located at 122 Avenue Mozart in the 16th arrondissement of Paris, France.

Wikipedia: Hôtel Guimard (Art Nouveau) (EN)

The Hotel Mezzara is an Art Nouveau style mansion built by the architect Hector Guimard in 1910-1911 for Paul Mezzara, a textile industrialist and lace designer. It is located in the 16th arrondissement of Paris.

Wikipedia: Hôtel Mezzara (FR)

The Castel Béranger is a residential building with thirty-six apartments located at 14 rue de la Fontaine in the 16th arrondissement of Paris. It was designed by the architect Hector Guimard, and built between 1895 and 1898. It was the first residence in Paris built in the style known as Art Nouveau.

Wikipedia: Castel Béranger (EN)

The crystal fountain, often called Béla Bartók fountain, is a sculptural transcription of the tonal harmony research by the Hungarian composer Béla Bartók. Work of the sculptor Jean-Yves Lechevallier, in polite steel and mosaic, it was inaugurated in 1981.

Wikipedia: Fontaine Béla-Bartók (FR)

The Champ de Mars is a large public greenspace in Paris, France, located in the seventh arrondissement, between the Eiffel Tower to the northwest and the École Militaire to the southeast. The park is named after the Campus Martius in Rome, which was dedicated to the god Mars. The name alludes to the fact that the lawns here were formerly used as drilling and marching grounds by the French military.

Wikipedia: Champ de Mars (EN)

The Cathedral of Saint-Louis-des-Invalides is the seat of the bishop of the diocese of the French Armed Forces. It is adjacent to the Hôtel des Invalides.

Wikipedia: Cathédrale Saint-Louis-des-Invalides (FR)

The Hôtel de Biron or Hôtel Peyrenc de Moras is a former mansion located at 77, rue de Varenne in the 7th arrondissement of Paris, in the Île-de-France region.

Wikipedia: Hôtel Biron (FR)

The Hôtel de Clermont is a private mansion located in the 7th arrondissement of Paris, 69 rue de Varenne. It covers an area of 4,250 m2.

Wikipedia: Hôtel de Clermont (Paris) (FR)