London School of Economics
The London School of Economics (LSE) is a graduate and undergraduate school of economics and political science. Located, as its name suggests, in London, UK, it is a constituent part of the University of London. The school is considered prestigious outside the UK, but not so prestigious within it.
Columbia has a multitude of different exchange programs with the school, most of which are somewhat murky and unknown to the majority of students. One is a joint MA in international history that it recently negotiated offering with the History Department.
LSE has also become a popular place for Columbia grads heading for business or government to pick up a masters.