Use "barbican" in a sentence

1. That night two men were conversing in the Barbican, the elder, Americus, of subtle features and beard scantily inhabited, was saying to his son:

2. The goblins drove on up the pass, regardless of their losses, until the first phalanx reached the barbican gates

3. Absently, as he read, he heard the drum of horses' hoofs outside the barbican, the sharp staccato of the guards' challenge

4. Over 168 pages, Martin makes a new (female) friend, is the epicentre of a major incident at the National Gallery and finally makes good on his promise to dance with Kelly, in the Barbican