Academia Brasileira de Letras space, generating 70% of its current revenue. The rest comes from rental of other buildings, which were legated by book editor Francisco Alves, in 1917, and from financial investments. This comfortable situation allows for paying a "jeton" to each academician. The ABL is located just by its side, in a neoclassical building, which is named "Petit Trianon". It was donated by the government of France in 1923 and is so named because it is a copy of the Petit Trianon palace in Versailles, near Paris, France. It has recently inaugurated one of the largest public libraries in Rio, with 90,000
Palace of the Shirvanshahs reservoir, which was one of the largest in the Fortress of the Ovdans. This ovdan supplied drinking water not only to the palace, but also to the entire surrounding area. This assumption is confirmed by the nearby small, built in the XIV century Chin Mosque, which is believed to have served the residents of the nearby area. Ovdan supplied water to the palace bathhouse. Ovdan is a spacious reservoir located deep underground, which was ventilated by means of a special vertical shaft. Such a structure is typical for most of the ovdans surviving till the present day. To descend into