onedc SM Developer/Designer

Photograph: Alamy

Missouri State Penitentiary, US

This murky institution, which opened in 1836
and only closed in 2004, has a notorious
history as the holding prison for Missouri’s
death row inmates. Now – once you’ve signed
a waiver in case you injure yourself while in
the derelict building – you can go on a history
tour looking at the prison’s dark past: the
women’s unit, death row cells and even the
gas chambers once used for executions. Brave
visitors can take part in an “overnight
investigation” into paranormal activity there.