This Architect's Final Project is an Oasis for All Mankind

The Green Citadel in Mugdeburg, Germany, is a vibrant complex featuring residential apartments, shops, cafes, a hotel, and a preschool. It was one of Germany's first prefabricated slab buildings, completed in two years. The complex is known for its bright pink exterior and green rooftop garden. Each pillar and door is uniquely designed. Created by Austrian architect Frieden Wright Hunter Wasser, it was his final project, envisioned as an oasis for humanity and nature amidst conventional housing.

What unique feature is mentioned about the pillars and doors in the Green Citadel?

How does the architect describe the Green Citadel in his own words?