Jay- Overall the building material should have a sense of practicality, openness, yet permanence. (I.E., material that can stand the test of time such as adobe, but something a bit more efficient than adobe. Reused and/or re-purposed material would be great also. Question, what are the galleries and structures in Europe, or the Taj Mahal made of?). Durability is key. The design of the building will, ideally, have the same characteristics as the ideology of the programming.
Omar- Adobe AKA brick looks amazing when combined with steel structure, concrete, and greenery. If durability is what we want, concrete is the way to go. It is no coincidence you liked house of trees the most since that project utilizes all the materials I mentioned. The Taj Mahal is made out of marble and most of the galleries in Europe are made of concrete or stone.

So imagine a resident being able to live this lifestyle.. where a phoenix might drop. out of the sky and an artist houses her (spacial dimensions), he's able to create music in his space with her (sound proof walls and floor with great acoustics), eating at the infamous community table where there is a free, "family dinner" on a recurring basis, performance or presentation during the dinner of previously mentioned artist during the dinner. He was free to explore and express himself in a grand, yet somehow simplistic way.

All ideas above, simplified. Everything you need is taken care of in a way where it becomes a part of the lifestyle

Everything measured in the Fibonacci sequence aka the God pattern 

How do we merge the two worlds..ideally 3 worlds if you were to include culture and lifestyle...