The Camões Theatre, located on the riverfront of Lisbon’s Parque das Nações, is a striking architectural feat that harmonizes with its surroundings while asserting its own identity. Designed by Manuel Salgado in collaboration with Marino Fei, the theatre is strategically positioned between the Knowledge of the Seas Pavilion and the Oceanarium, two imposing structures. The design embraces simplicity and abstraction, with a foundation that seamlessly integrates with the surrounding paving, anchoring the building to the ground. The main entrance features a grand foyer with expansive glazing that offers breathtaking views of the Sea of Straw, blurring the lines between interior and exterior spaces. Inside, the theatre follows the traditional Italian layout, with a sequence of spaces including a foyer, an auditorium with a surrounding gallery, and a stage with annexes. The interior exudes sobriety and elegance, reminiscent of the concept of “La machine du Théâtre,” while the exterior is characterized by a tectonic rectangularity, with strong horizontal lines and a bold blue hue. This architectural masterpiece reflects a desire for order and timelessness, transcending the festive chaos typical of World Exposition events.