notes:
The Tower of Belem is considered one of the main works of the Portuguese late gothic, the manueline style. Indeed, the tower is decorated with several typical Manueline motifs like the armillary sphere (the symbol of Manuel I), the cross of the Order of Christ (to which Manuel I belonged), twisted ropes, elaborate rib vaulting and other features. However, some of the decoration dates from the renovation of the 1840s, like the shields with the cross of the military Order of Christ, that decorate the crenellations of the walls, and the decoration of the small cloister of the bastion. The part of the tower facing the river displays the richest decorations.
The Tower of Belem can be divided into two parts, the bastion, with the shape of an irregular hexagon, and the five-story tower itself, located on the north side of bastion. The whole ensemble looks like the bow of a caravel.
Casemate of the bastion of Belem Tower.The bastion has a vaulted chamber (the casemate), with openings in the 3.5 m-thick walls for the 17 large-calibre breech-loading cannons. The open centre above the casemate made it easier to dispel the fumes and smokes. The bastion platform could also be used for the emplacement of light-calibre guns. This was the first Portuguese fortification with a two-level gun emplacement and it marks a new development in military architecture. The corners this platform have delicate turrets (guerites) topped by Moorish-looking cupolas. The base of the turrets have images of beasts, including a rhinoceros, considered to be the first sculpture of such an animal in Western European art. This rhinoceros probably depicts the one that Manuel I sent to the Pope in 1515. On the platform, in front of the tower, stands a statue of the Madonna of Belem with Child and a bunch of grapes in her left hand in a richly carved niche with a baldachin in Manueline style. The same turrets occur on the upper platform of the tower.
Crenelated tower with Manueline decorationsThe entrance to the Tower is done through a portal decorated with many Manueline motifs, including Manuel I's badge of honour (an armillary sphere). The whole tower is also decorated with stone twisted ropes, which even tie a knot at the north façade of the building. The upper corners of the tower walls have statues of St Vincent and St Michael, as well as many fine windows with arches. The renaissance-style covered loggia, running the full length of the south side of the first floor of the tower, is particularly delicate. It has a Venetian touch. The many shields that decorate the merlons are neo-manueline.
The tower itself, 35 metres high, has four storeys and a terrace that offers wonderful views of the surrounding landscape. The powder magazine is at water level. The next storeys are reached via a narrow spiral staircase. The next storey was the commander's room. The second storey has covered balconies on each side. Of the tower floors, the most interesting is the chapel of the fourth floor, with a magnificent Manueline rib vault decorated with the armillary sphere and the cross of the military Order of Christ, who participated in many Portuguese conquests. The oratory is on the top floor.