This square dates back to the first half of the 17th century. Its location, just a few metres from the bay, led to it becoming an important trading square over the years. It is said that around the year 1600 the first fountain of the city could be seen at this square. In 1836 it was replaced by a beautiful fountain made of white Carrara marble by Giuseppe Gaggini, under the good auspices of the Villanueva Count. This fountain is called Fuente de los Leones (Lions Fountain). On its paved area stand two noteworthy buildings: the Monastery and Basilica of San Francisco de Asís, which today houses the Museum of Religious Art and a concert hall. It is also where the Lonja del Comercio (Chamber of Commerce) is located, inspired by Spanish Renaissance architecture and topped by a dome on which a sculpture of the god Mercury stands. Among the houses built around the plaza, the house of the Arostegui family, residence of the Captain Generals until the completion of the City Hall at the end of the 18th century, was erected.

The Edificio Bacardí (Bacardí Building) is the first Art Déco building in Havana. It is considered an architectural jewel of its time, as well as one of the best examples of decorative art. Construction finished in 1930, and it was the tallest building on the island at that time. It is said that the building contains marble and granite from almost every nation in Europe. This building has 12 floors, 5 of which are offices for rent, and a total space of 7,031 square meters. Its facade is covered in Baviera red granite and on the top you will see a bat, the symbol of the Bacardí company. At the end of 19th Century, the Bacardi rum was very famous in Cuba and abroad. Its creator, Don Emilio Bacardi, was a Spaniard settled in the island. It is said that he had a bat as a talisman which was used as logo in the first distillery that made him to win fortune. It has a tiered pyramid design, using tiles as a decorative element from Catalonian Modernism, giving the building a wonderful shade effect. The richness of its interior decoration is given mainly by the natural beauty of its marbles, brought from Europe and the typical accessories of Art Deco like lamps, ironworks, drawings, etc. Currently, the building houses Cuban offices, offices for and international companies. The lobby has a bar open to the public and you’ll be able to climb the tower and get a wonderful view over Havana.

The San Francisco de Asís Church and Convent is the current scenario of the richest cultural traditions. This is one of the most extraordinary convent and church complex of the colonial time. The construction of the current set dates from 1738, and it replaced a more modest one completed in 1591. After a restoration in the nineties, the architectural group has harbored, also, a concert hall and the Holy, Sacred and Religious Art museums. The most significant element of the Church is the Tower 42 meters of height, second in altitude at the colonial time. 

The Palacio del Segundo Cabo (Segundo Cabo Palace) is located on the north side of Plaza de Armas Square, Old Havana. This majestic palace is Neoclassical in style and was built in 1772 with local limestone full of holes and calcareous marine incrustations. This building was first built as headquarters of the Spanish vice-governor. Currently, and after several reworkings during which it functioned as Post office, Senate Palace, Supreme Court, National Academy of Arts and Letters, or the Cuba Academy of Science, nowaday it belongs to the Cuban Ministry of Culture, and it hosts the Centre for the Interpretation of Cuba-Europa Relationship.