These instructions are using only parts from 21054 The White House set. Spare parts included in the original set are also used for this build. You will get light and dark version of the handcrafted instructions in PDF and bricklink list in XML.
The Barcelona Pavilion designed by Ludwig Mies van der Rohe and Lilly Reich, was the German Pavilion for the 1929 International Exposition in Barcelona, Spain. It was dismantled after the temporary exposition and then reconstructed permanently between 1983 and 1986.
You can read some information about this building at https://en.wikipedia.org/wiki/Barcelona_Pavilion
I tried to reproduce as many details as possible in the chosen scale. It has also suggestion of interior. I reused the White House print piece because this is also “white house” after all. You can replace it with black tile if you are not into it.
Instructions are handcrafted in Studio 2.0 with all details and proper views of the build. You should be able to build this architecture model without any issues. Please let me know via private message if something will not be clear. I will try to help you.
Enjoy the build!