The Museo Alejandro de Humboldt (Alejandro de Humboldt Museum) is located in a Colonial house in Plaza de San Francisco de Asís Square, in Old Havana, Cuba. Its name comes from the German scientist Alejandro von Humboldt, who is seen as the second person to discover Cuba. This is a scientific museum dedicated to biology and its main objective is to preserve research and promote the historical Humboldt’s legacy. This institution enhances the labor of Cuban and international personalities whose contributions are considered relevant for the development of culture in general terms. It exhibits the historical trajectory of the scientific and botanic data he compiled throughout the island at the beginning of the 19th century, as well as a botanic exhibition which is fundamentally made up of ferns. In this museum there is a perfect copy of a Kritosaurus skeleton found in the desert and donated by the Mexican government, as well as an enormous Pterosaur skeleton, which is around 10 meters length. The House also has a conference room with capacity for 100 persons and a specialized library on German literature.

La Bodeguita del Medio is a must-visit, typical restaurant of Havana, and one of the most attractive tourist spots. Old Havana has been frequented by countless visitors, from well-known writers like Ernest Hemingway to important politicians. Its interior offers a typical Cuban atmosphere, as well as excellent music, Creole cuisine (slow-roasted pork, ropa vieja, black beans, yucca with mojo, tostones, arroz morro, etc) and a fantastic typical drink like the mojito. Following the initiative of Leandro García, a journalist who signed the restaurant’s wall, all famous people who visit the place do the same. They leave a memento there in the form of a print, a picture, an object, or some graffiti; it is even possible to find the signatures of some historical figures, like Salvador Allende, Ernest Hemingway, or Pablo Neruda. You can’t miss your chance to visit this place on your way through Habana Vieja. If you don’t book a table in advance you won’t probably have another chance to get one, but you will for sure enjoy an incredible atmosphere surrounded by Cuban history.

The vast Fortaleza de San Carlos de la Cabaña, known as ‘La Cabaña’, running beside the harbor, was constructed after the English capture of Havana in 1763. The largest of the military structures built by Spain in the Americas, this fortress was completed in 1774 and its presence formed an effective complete deterrent against the country's enemies. The polygon, occupying an area of around 10 hectares, consists of bastions, ravelins, moats, covered walkways, barracks, squares and stores.  It is impressively well preserved, and the gardens and ramparts are romantically lit in the evening. This fortress hosts the spectacular nightly ceremony of El Cañonazo de las Nueve (cannon fire at 9), the firing of a cannon that marked the closing of the city gates, one of Havana's longest-held and most attractive traditions.

The Cannon Blast ceremony (El Cañonazo de las Nueve) is one of the oldest and attractive traditions of Havana. In colonial days, the shots signalled the closing of the gates of the walled city and the rising of the chain across the entrance to the harbour. The tradition of firing a cannon every night at 9:00 pm was kept even after the wall was torn down and is still used for checking your watch.