	 Jean Nouvel: commissioned to design the 12th floor and facade. The idea the French architecture aims to convey in his work on the Hotel Puerta América is a crossroads between art and architecture “ which allows guests to experience extraordinary moments and creates small worlds for people to enjoy”. http://www.jeannouvel.com/

	 (Estudio Mariscal): 1 1th floor. Javier Mariscal acknowledges that it was “fantastic” taking part with his designs in the Hotel Puerta América, “a crazy, unique and free hotel”. He says that, “freedom has been total, within the bounds of following a schedule, and the concept is simply isn't it great to be here ” http://www.mariscal.com

	 Arata Isozaki: 10th floor. In his projects, Isozaki focuses on an intuitive search for spatial meanings, transforming the structure into a tool capable of combining dream and reality .

	 Richard Gluckman (Gluckman Mayner Architects): 9 th floor. In his design, Richard Gluckman decided to create a space in which one could be comfortable and relaxed in an anonymous way. From the outset, Gluckman wanted to differentiate the experience of being in a hotel room from that of being at home.

	 Kathryn Findlay (Ushida Findlay Architects): 8 th floor. Kathryn Findlay explained that the project interested her as it gave her the opportunity to design a space of pure comfort. When she was developing her work she attempted to recreate a place of meditation where you can dream, where you feel as if you are floating on the clouds and feel the freshness of the breeze.

	 Marc Newson: 7th floor and bar. In Marc Newson's opinion, the project has been an excellent opportunity to design what he always wanted to find in a hotel: “to create a modern and relaxing environment in the rooms, where any guest can feel comfortable at once, even if they are staying only one night”.

	 Ron Arad (Ron Arad Associates): 6 th floor. Ron Arad says that he sees the Hotel Puerta America project as a clear evolution towards a new interpretation of what a hotel is. In his view, the participants have been given a license to experiment, which dovetails perfectly with his design ethos: the idea is not just to design a room but to find a different way of organising space .

	 Victorio & Luchino: 5th floor. Through beauty and artistry, they strived to bestow the hotel with a warm, welcoming and comfortable atmosphere. They aimed to shift the conceptual values they use in fashion to the fifth floor of the Hotel Silken Puerta America, a space that wraps guests up with its warmth, just like one of their elaborate overcoats would.

	 Eva Castro & Hoger Kehne (Plasma Studio): 4th floor. Eva Castro and Holger Kehne say that they were fully aware of the uniqueness of the Hotel Puerta America project in the context of the contemporary architectural scene. Their idea for the fit-out was to move away from the stereotype of a hotel as an anodyne and homogenous place. They experimented with the differentiation of space by developing the surface area, revealing its three-dimensional capabilities and allowing the relationship between the room and guest to be based on cognitive behaviour rather than a nostalgic approach .

	 David Chipperfield (David Chipperfield Architects): 3 rd floor. Chipperfield has elected to use a simple but luxurious range of materials such as handmade black terracotta flooring for the bedroom, walls upholstered in wild silk in gold tones, white marble, etc. http://www.davidchipperfield.co.uk/

	 Norman Foster (Foster&Partners Limited): 2 nd floor. Norman Foster Norman Foster explains that the Basque sculptor Chillida was the source of inspiration for the second floor of the Hotel Puerta America. The result is that the rooms are transformed into flexible and sensual inner sanctuaries. The design and integration of spaces the materials and tones used… All these details have been carefully selected to envelop guests with serenity, enabling them to disconnect from the hustle and bustle of the outside world. Foster sees it as a perfect urban sanctuary .

	 Zaha Hadid: 1st floor. Zara Hadid states that she has been able to create a different architectural language, based on the new developments introduced by digital design and enhanced by today's production capabilities. The aim was to create fluid spaces.

	 John Pawson: Common areas. Pawson sees in the Hotel Puerta America project the chance to create a different concept of foyer: a reception space but at the same time a space where guests can relax, have a coffee, read a newspaper or hold a pleasant conversation. The idea was to design an atmosphere the makes people feel really comfortable and get away from the cliché of a foyer as a place it is difficult to spend much time in.

	 Christian Liaigre: Restaurant. What attracted Christian Liaigre to the Hotel Puerta America project from the outset was the idea of collaborating with other noted names in the world of contemporary design and architecture. He is a greater admirer of Spanish culture and has strived to convey a modern vision of the country and of the city of Madrid in his work. He has opted to integrate graphic hallmarks from Andalusia, Galicia and Catalonia: ceramics, arabesques in forged iron, embroidery, etc.

	 Harriet Bourne y Jonathan Bell (B+B uk): Landscaping. Both Jonathan Bell and Harriet Bourne value the work they have done for the Hotel Puerta America project very highly. They believe that the integration between vegetation and buildings is fundamental. Their sources of inspiration for the project have been natural environments: the countryside, the forest, the beach…

	 Arnold Chan (Isometrix Lighting and Design): Lighting. He views lighting the spaces created by each architect or designer as an amazing challenge as he has to take into account the style and vision of each creative artist. Isometrix has attempted to create schemes adapted to each artist's vision, which aim to enhance and complement the designs rather impose themselves on them.

	 Jason Bruges: Lighting. For Bruges space is not complete without the interaction of the individual. He has been able to work with new materials and technology to create atmospheres that reflect the transitory nature of a hotel .

	 Teresa Sapey: Car park. When asked about her commission (the design of the car park), she observes that she has always been drawn to hideaways and thinks that car parks harbour this element of the unknown. For Sapey, it is the ideal place to reinvent space and play with lighting to create a different atmosphere to that of the sordid and grey places that car parks are more often than not.

	 Felipe Saez de Gordoa (SGA Estudio): Structure. The projects the practice has been involved in include several hotels (such as the Ciudad de Vitoria, Castilla Plaza de Madrid, Juan de Austria de Valladolid, Luis de León, Atlántida de Santa Cruz de Tenerife, Coliseum (Santander) and Puerta Valencia ).