The project for the refurbishment and extension of the National Museum of Contemporary Art (MNAC) in Lisbon aims to revitalize this cultural space in the historic Chiado district, an area of significant heritage value. The proposal integrates the historical buildings with a new volume that seeks to balance historical memory with contemporary architecture. This volume respects the historical value of the surroundings, creating visual and functional continuity with the city while incorporating contemporary design elements that establish it as a cultural and architectural landmark. The structure of the new volume acts as a mediator between the historic buildings, connecting exhibition spaces and circulation areas and enhancing the visitor experience. The base of the building is clad in lioz stone, an iconic material in Lisbon, which lends it a respectful presence rooted in tradition. In the upper levels, rustic ceramic mosaic introduces a modern texture that enriches the building’s visual profile. This material approach reflects a harmony between past and present, allowing the building to be perceived as a natural extension of the Chiado district. The design organizes the museum tour in a linear system, facilitating circulation and creating a fluid experience in each exhibition area. On the access level, the main lobby connects directly with the sculpture garden, an outdoor space that serves as a transition between the museum and urban life. This garden not only functions as a public area for the contemplation of open-air works but also reinforces MNAC’s role as an accessible cultural centre open to the community. The layout of this garden seeks to integrate the museum with the neighbourhood’s natural routes, reinforcing its connection with the surroundings. Functionally, the exhibition spaces are arranged to offer visitors a continuous, sequential visual narrative. The permanent exhibition resides on the lower level, while temporary exhibition rooms and the library.