Now part of Tyburn Convent, this building is 3 feet 6 inches wide only 3 feet wide at its smallest. One theory for its existence is that it blocked a public right of way to serve as a watch house overlooking the old St George’s graveyard — extremely popular with bodysnatchers in the 18th Century! With the ground floor consisting of nothing more than an alleyway behind the front door and the first floor just a tiny bathroom. It was built in 1805, and was damaged by a bomb in 1941. Lewis Grant Wallace was the first and only tenant.