The form of the triumphal arch has also been put to other purposes, notably the construction of monumental memorial arches and city gates such as the Brandenburg Gate in Berlin or the Washington Square Arch in New York City, or simple welcoming arches such as the Barcelona Triumphal Arch, built as an entrance to the fairgrounds for the 1888 World Fair. Although patterned after triumphal arches, these were built for quite different purposes - to memorialise war dead or to provide a monumental entrance to a city, as opposed to celebrating a military success or general.