Additionally, noteworthy attractions include the Pavilhão Atlântico (now known as Altice Arena), the iconic Vasco da Gama Tower (the country's tallest building), the Lisbon Oceanarium (one of the world's largest aquariums), and the Church of Nossa Senhora dos Navegantes, completed in March 2014.

Following Expo '98, the area was transformed into a modern commercial and residential district, known as the Parque das Nações (Park of the Nations).

Parque das Nações is also a perfect spot for birdwatchers, as its proximity to the Tagus Estuary allows for the observation of various bird species.

[4] The creation of the parish was envisaged in a bill proposed by the parliamentary groups of the PSD and CDS/PP parties, which expired with the dissolution of the Assembly of the Republic in 2004.

In the subsequent legislative term, in 2005, the same bill was reintroduced by a PSD deputy and referred to the Committee on Local Government, Environment, and Territorial Planning of the Assembly of the Republic for further evaluation and discussion.

The Residents' and Merchants' Association of Parque das Nações supported the creation of the parish, stating it was essential to maintain cohesion within the urban space inherited from Expo '98.

Parties and organizations advocating for this administrative change emphasized that it would be the most rational way to manage an area like Parque das Nações, which at that time was divided among three parishes and two municipalities.

It is worth noting that all organizations and resident groups of Parque das Nações expressed support for the creation of the parish for quite some time.

The creation of the new parish would simplify the administration of Parque das Nações after the area's return to municipal control, which was planned for 2009.

[5] In functional terms, the entire Parque das Nações operated, de facto, as a neighborhood of the city of Lisbon (albeit the most recent one), and its inhabitants identified themselves as such.

It is important to highlight that the area that was supposed to be withdrawn from the parish of Moscavide was never administered by it, and the area that was supposed to be withdrawn from the parish of Sacavém has not been so for several decades: until the beginning of the Expo '98 project, they were administered by the Port of Lisbon; thereafter, they had been under the administration of Parque Expo, S.A. On the other hand, such desire is generally rejected by the inhabitants of Sacavém and Moscavide (however, only those residing outside the territory of Parque das Nações).

There was also a proposal for the creation of a new municipality that would encompass Parque das Nações and the parishes of Moscavide, Santa Maria dos Olivais, and Portela.

[5] At the time of the census carried out in 2011, an estimated 21,000 people lived in the Parque das Nações, which was shared between the Lisbon and Loures municipalities until November 2012.

[6] Taking advantage of its geographical position, Parque das Nações also has a brand new marina, Marina Parque das Nações[7] featuring 600 berths and modern infrastructures, a river pier for cruises or historical vessels and an exclusive pontoon prepared to receive nautical and on land events, and a spot for bird watching as it is sited in the Tagus Estuary, one of the largest and most diverse estuaries of Europe.

[45][dubious – discuss] The parish is nonetheless actively promoting initiatives aiming at helping people in situation of permanent of temporal homelessness.

[citation needed] Portuguese street artist Bordalo II creates installations made of garbage to highlight over-consumption.