Architectures for Exchange
Here is some of the architectural structures that has inspired differente type of exchanges: intellectual, foods, markets; historically and actually from different places of the world. We can see some interesting similarities emerging from them, for instance the independent units of a Chinese and a Spanish street markets.

Chinese Market

Cascorro Madrid Market

Agora in Athens

Organization of the buildings at the original Agora

Reconstruction of Alexandria Library
I found some interesting articles because there are some tendencies of connecting natural structures with 21st century architectures 1 http://www.nbm.org/Exhibits/current/big_and_green.htmand 21st century architectures 2
& 3


Moebius fountain

Design for the top of a Unesco Building
Similarities between different plazas around the world:

Plaza do Rossio, a train station and market place, in Lisbon

Praca do Comercio at night in the Lisbon port

St Pettesburg

Valencia

Unesco Plaza