Fortification:: A barbican was a type of {=external ~internal#A barbican was deliberately built a distance outside the walls, though connected to them} fortification of a town or city.
London gates:: Counting from west to east, what was the number, out of of the seven gates of the city of London, of Cripplegate in London Wall, in medieval times? Was it {= the fourth? ~the fifth?}
Gate order:: Which was the medieval gate of London immediately to the east of Cripplegate? {~Aldersgate#Aldersgate was immediately to the west =Moorgate}
Chamberlin, Powell and Bon:: The architects Chamberlin, Powell and Bon who designed the contemporary Barbican Estate and Barbican Centre, in the old Cripplegate area, were influenced by {~Mies van de Rohe =Le Corbusier}
