The congress's logotype represents Portugal in the European context, highlighting Lisbon, the city that receives the event. Its elements and symbolic meanings will be explained in this brief description. The armillary sphere, logotype's main element, is a reduced model of the celestial sphere and a navigation assistance instrument. Besides being a key feature of the country's flag, the armillary sphere is a token of portuguese people's vocation for universality. Belém's Tower, one of Lisbon's most emblematic monuments, was initially a fortification included in the Tagus River defensive plan of king João II of Portugal (15th century). As a symbol, it evokes not only Portugal's nomadic soul throughout a once divided world, but also the braveness of its foremost cultural connections across the globe. Vasco da Gama's Tower, originally built and designed to be displayed at 1998 Lisbon World Exposition, is one of the country's highest and boldest edifices. It is a beautiful and modern reminder of a country that doesn't simply lives up of its Past, but is also highly focused on its Present and Future development. Finally, the twelve stars surrounding the logotype's edges are, as one may guess, a reference to the European Union. They remark the congress's international character, embracing the great "european family".