A new restaurant signed by Nayra Iglesias and her team has just opened in the Madrid’s neighborhood, El Retiro. Located on Calle Doctor Castelo 21 is the second restaurant that the studio designs for the well-known chain of Marisquerias Norte Sur.

Project: Marisquería Norte Sur Dr. Castelo.
Location: Calle Doctor Castelo 21, Madrid.
Architecture and interiorism: Nayra Iglesias (In Out Studio).
Diseño gráfico: In Out Studio.
Photography: Javier Ortega.
Date: 2017.
Total surface: 79,17 m2.
Pavement: Porcelain tiles
Coating: Stainless Steel
Lacquered Woods
Worktop of Silestone
Lighting: Custom design by In Out Studio
Bathrooms: Roca
Coating: Stainless Steel
Furniture: Custom design by In Out Studio

Interior Design North South Resturant - DR. CASTELO by In Out Architects - Sheet3
©Javier Ortega

The initial approach of the reform was to design a small and sophisticated space with two spaces, bar area and restaurant, to transport the customer inside a unique cabin.

The facade of the restaurant has been entirely made of stainless steel following a fun geometric game, the hallmark of the renewed image that In Out Studio has designed for the seafood chain.

Inside, the fusion of noble and industrial materials and the mix of classic and contemporary styles, allow reinterpreting the interior of a ship’s stateroom through the use of corrugated iron and wood. The lighting of the restaurant Norte Sur Doctor Castelo is one of the most relevant parts of the intervention. Neon signs, funny wall sconces and a large hedgehog-shaped luminaire immerse the viewer into a dreamy ocean-like dream.

Interior Design North South Resturant - DR. CASTELO by In Out Architects - Sheet5
©Javier Ortega

The first atmosphere of the restaurant is the area of tapas starring the bar and the use of a geometric plot that establishes a fun order on walls and ceilings. This geometric pattern combined with notes of color and textures, helps to create a relaxed atmosphere and marks the difference between the space of tapas and the restaurant.

In the bar area stands out the game created between opposing materials such as brass, white marble on the countertop or the corrugated metal sheet that wraps most of its walls. This space is characterized by its more industrial and sober, with predominance of metallic surfaces and cold colours.

Interior Design North South Resturant - DR. CASTELO by In Out Architects - Sheet6
©Javier Ortega

In other side, the restaurant area creates a more welcoming and sophisticated environment with a predominance of warm materials such as oak wood panels that give acoustic properties to this space.

From the façade to the open kitchen, the Norte Sur Doctor Castelo seafood restaurant presents itself as an unusual gastronomic space that surprises with a fresh and risky interior design.


Rethinking The Future (RTF) is a Global Platform for Architecture and Design. RTF through more than 100 countries around the world provides an interactive platform of highest standard acknowledging the projects among creative and influential industry professionals.