1. The first variants were conceived early in the 20th century.
Modern architecture
The first variants were conceived early in the 20th century.
The exact characteristics and origins of Modern architecture
are still open to interpretation and debate.

2. Origins
Some historians see the evolution of Modern architecture as a social matter.
Modern architecture as primarily driven by technological and engineering developments.

3. German pavilion in Barcelona
Was designed by Ludwin Mies Van Der Rohe in 1929.

4. German pavilion in Barcelona
The german pavilion is one of the greatest works of modern architecture

5. German pavilion in Barcelona
Has been studied for many years.