Main entrance of the Tower of Belém where the Portuguese coat of arms can be seen. King Manuel I wanted the Tower of Belém, located at the entrance to the kingdom’s capital, to clearly assert his power. Therefore, the king ordered his heraldry to be ostensibly displayed on the tower. These include the Royal Arms, his personal emblem the "Armillary Sphere", and the symbol of the Order of the Cross of Christ (which he administered).