The Confitería del Molino is an Art Nouveau style coffeehouse located on the corner of Callao and Rivadavia Avenues, in front of the Argentine National Congress in Buenos Aires, Argentina.
Cayetano Brenna, a famous confectioner, commissioned Italian architect Francisco Gianotti in 1915 to design the building that would house a café on its ground floor. The café itself opened on July 9, 1916, and when completed in 1917 the building became one of the tallest in the city with a corner turret rising 65 metres. Illuminated from the inside with electric lighting, the turret featured stained glass windows and decorative windmill sails. El Molino and Galería Güemes were two of Gianotti's greatest works and represent important examples of Art Nouveau style architecture in Buenos Aires.
The building is not generally open to public at the moment, awaiting restoration.
Wikipedia https://en.wikipedia.org/wiki/Confitería_El_Molino
Address Avenida Rivadavia 1800, Buenos Aires, Argentina
Coordinates -34°36'32.461" N -58°23'32.148" E