The Lisbon Oceanarium is one of the largest aquariums in Europe and a must-visit attraction for nature lovers. Located in the Parque das Nações district, it houses a diverse range of marine species from different ecosystems around the world. Visitors can walk through large transparent tunnels, providing a unique underwater experience. The Oceanarium is home to various marine animals, including sharks, rays, penguins, and colorful tropical fish. It also focuses on marine conservation and education, making it an ideal destination for families.