The Expo was a success, attracting over 10 million visitors. The figures for the participants were also impressive: 143 countries and 14 international organisations were present.
Beyond the commemoration of the 500th anniversary of Vasco da Gama's arrival in India, the Expo in Lisbon had a specific theme: "The oceans: a heritage for the future". It was mainly focused on proposing new ethics in relations between man and his natural environment and contributing to raising awareness with regard to respecting the oceans. Indeed, by a declaration of the United Nations, 1998 was the International Year of the Ocean, so the topic fitted well. Thus, besides the Expo's content, the Independent World Commission on the Oceans presented its final report at the Portuguese Pavilion. The simultaneity of these two events made the topic of the oceans a priority on the global political arena.
The highlight of the Expo was without any doubt the Oceans Pavilion that sheltered the Oceanarium. With more than 500 species represented and a volume of water equal to four Olympic size swimming pools, the Oceanarium was one of the first aquariums in Europe. Since its opening, more than 12 million tourists visited the Oceanarium. Among the other noteworthy buildings, are namely the "Gare do Oriente", which became one of the main transport hub in Lisbon , the surprising Vasco da Gama Tower, the huge bridge of the same name and the Park of the Nations' cable car, which allowed the visitors to move within the Expo.
Promoting cultural diversity was also one of the Expo's goals. Visitors were spoilt for choice: street performances, opera at Camoes Theatre, 17 stage spaces dedicated to music, activities for children, movable stages... Along with this rich programming, there were two side festivals: 100 Days Festival and Festival Dive into the Future.
Expo'98 was exceptional because its double legacy : it illustrated Portugal's modernity on the world stage and at the same time completely redesigned the neglected Eastern part of the city. This fantastic redevelopment project enabled the birth of a new neighbourhood using components from the Expo site. This former industrial wasteland is today the main business district of the city and a pleasant place to live.
In addition to the international assertion of Portugal, the Expo had a significant impact on tourism but also on employment and economy. Indeed, according to a survey from the Ministry for Equipment and Planning of Portugal, 1.2% of the GDP and 0.6% of the employment may have been attributable to the Expo in 1998. With regard to a long-term vision it is worth mentioning the tourism boom. Since 1998, in Lisbon, tourism has increased faster than in any other European city.