From a technical point of view, the barbican is a term which is used for a structure. It is a noun which means a building’s outpost and it can also refers to a fortified gateway, where the guards stay in order to watch over the entire city. This was actually the watch towers during ancient times however as the time passes, these watch towers became smaller and grew into barbicans. Nowadays Barbican is also the name for the estate found in the City of London. People who are into the business and commerce, particularly finance would surely love the home or property in the Barbican Estate.