The Tyburn is a stream which runs underground from South Hampstead to St James's Park. It is not to be confused with the Tyburn Brook which is a tributary of the River Westbourne.
The name Tyburn comes from the river that flowed through the area from South Hampstead to the Thames.
Tyburn is now one of London's 'lost rivers' and is completely underground, but many years ago it crossed Regent's Park, followed Marylebone Lane, down to Piccadilly near Green Park, and into the main river near Vauxhall Bridge.
The Tyburn tree was a huge triangular construction, the three posts were 18 feet high and the crossbeams were nine feet long - capable of hanging 24 (eight on each horizontal beam) prisoners at once.
Tyburn gallows, as depicted by William Hogarth in his print, The Idle 'Prentice executed at Tyburn (1747), was a triangle in plan, having three legs to stand upon.
Tyburn got its name from the Tyburn brook, which since being covered over is now one of the subterranean rivers of London.
The Tyburn Convent is a Catholic convent dedicated to the memory of martyrs executed during the Reformation.