The neighbors of the town insisted to the town council on the need to create a new public square for their amusement. In 1587, the town council decided to use as a public square the area behind the Convento de San Francisco, which was being built at the time. During the latter decades of the 16th century, this square was called the Plaza Nueva (new square), but from the 18th century onwards, once the Plaza del Cristo had been built, it began to become known as the Plaza Vieja (old square). The most remarkable feature of this square are the buildings around it, with their unquestionable historical and artistic importance of having been the blueprint for a style of architecture which, along with certain developments, subsequently spread throughout the city and characterised the Cuban architecture of the 18th century.

The Museo Casa Natal de José Martí (Birthplace Museum) is the house in which José Martí was born, a 19th century politician, intellectual and national hero of the Republic of Cuba. This humble two-floor house was converted into a museum in 1925 and declared a National Monument in 1949. It exhibits personal objects of José Martí, whose spirit is felt in every corner of the restored house. It was built at the beginning of the 19th century, rather close to the city walls, and has typical features of many houses in the area: a tiled roof and mortar walls.  The house was restored and its collection enriched in a community process in 1959. It is interesting to know that this museum contains the only known Oil Portrait of José Martí.

The Museo del Automóvil (Automobile Museum) is located in an 1892 Neoclassical construction in Old Havana. This museum is divided in two exposition rooms, which share the entire collection composed by 30 promenade cars, two rigid trucks, a funeral carriage, a special vehicle, seven motorcycles, a semaphore, three fuel pumps and two didactic imitations. This museum has a very well preserved and interesting collection of old automobiles, among which are the noteworthy Thunderbird, Pontiac, and Ford T, among others. The oldest vehicle in the collection dates from 1905, and the latest one comes from 1989. Most of them are North American, although some cars were made in Italy, Spain, Germany and Great Britain. It houses automobiles related to specific people and others antiquated vehicles. An example of this is the Cadillac used by Ernesto Che Guevara when living in Havana, the 1930 Fiat from Flor Loynaz, or the 1959 Oldsmobile used by Commander Camilo Cienfuegos.

The Catedral Ortodoxa de Nuestra Señora de Kazán (Nuestra Señora de Kazán Orthodox Cathedral), declared World Heritage Site by UNESCO, is one of the newest constructions in Havana, being built in 2000. This Russian Orthodox church is Byzantine in style. It has six beautiful domes, two of which (the biggest and smallest) are gold-sheeted, and the rest are made of bronze. Its staircase entrance calls our attention and is considered the second largest staircase of all outside Russia. From the interior, its golden altar stands out, built in Trinidad and the San Sergio Monastery, Russia; and the murals adorning its walls.