Originally conceived by the Gabinete de Arquitectura Risco, the building was constructed in 1997 during the International World Exhibition Expo 98, following the design laid down by Manuel Salgado.

The theatre was situated in a privileged location between the southern international area and Oceans Pavilion, and was conceived with specific acoustic characteristics and auxiliary spaces in order to present opera, theatre spectacles and various musical events.

Integrated into the former Expo 98 grounds, today known as Parque das Nações, the theatre was built near the Pavilhão do Conhecimento and Lisbon Oceanarium.

It is a simple composition that integrates with the public spaces, but visible along the pedestrian passageways along the riverbank, that includes the Passeio do Neptuno and the gardens of Jardim da Água.

The entrance to the hall is across an atrium, with a large glazed window (Mar da Palha), which is open to two floors.