Rem Koolhaas is a Dutch architect. He practices Urbanism and teachers Architecture and Urban Design at Harvard University. He studied at Cornell and the Architectural Association School of Architecture in London. He is a co-founder of the magazine Volume Magazine. One of his more famous buildings is the Casa da Música in Porto, Portugal. It was the first building in Portugal dedicated exclusively to music. Construction began in 1999 and was completed in 2005. The main construction material was Jordian marble.