Remment Lucas Koolhaas (born 1944) is a Dutch architect, architectural theorist, urbanist and Professor in Practice of Architecture and Urban Design at the Graduate School of Design at Harvard. He is often cited as a representative of Deconstructivism and is the author of Delirious New York: A Retroactive Manifesto for Manhattan. Widely regarded as one of the significant architectural thinkers and urbanists of his generation, Koolhaas won the Pritzker Prize. He was elected to the American Philosophical Society in 2014.

De Rotterdam is conceived as a vertical city: three interconnected mixed-use towers accommodating offices, apartments, a hotel, conference facilities, shops, restaurants, and cafes. The project began in 1997. Construction started at the end of 2009, with completion in 2013. The towers are part of the ongoing redevelopment of the old harbour district of Wilhelminapier, next to the Erasmus Bridge, and aim to reinstate the vibrant urban activity - trade, transport, leisure - once familiar to the neighbourhood. De Rotterdam is named after one of the ships on the Holland America Line, which departed from the Wilhelminapier in decades past, carrying thousands of Europeans emigrating to the US.

The Rotterdam Kunsthal was designed by Rem Koolhaud and OMA between 1987-1992. It combines 3300 square meters of exhibition space, an auditorium and restaurant into one compact design. Sloping floor planes and a series of tightly organized ramps provide seamless connection between the three large exhibition halls and two intimate galleries. Its position, wedged between a busy highway and the network of museums and green spaces known as the museum park, allows it to function as a gateway to Rotterdam's most prized cultural amenities.

For the design of Seattle Central Library (1999-2004) OMA (Rem Koolhaas + Joshua Prince Ramus) worked with LMN Architects. Front elevation of the building where the cross bracing steel structure is seen behind the glass facade. The complex geometry responds to the local conditions such as views, orientation and urban density.
De Rotterdam, Rotterdam (Rem Koolhaus-OMA, 1997-2013) (1)De Rotterdam, Rotterdam (Rem Koolhaus-OMA, 1997-2013) (2)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (2)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (3)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (4)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (5)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (6)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (7)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (8)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (9)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (10)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (11)Kunsthal, Rotterdam (Rem Koolhaus, OMA,  (12)Kunsthal, Rotterdam (Rem Koolhaus, OMA, 1987-1992)Rem Koolhaus (1)Rem Koolhaus (2)Rem Koolhaus (3)Rem Koolhaus (4)Rem Koolhaus (5)Rem Koolhaus (6)