A closer look

Because sitting in a dark, claustrophobic box rocketing through a soot-filled subterranean tunnel sounds like a perfectly relaxing way to start your day. When the City & South London Railway opened in 1890, the designers figured that since there was nothing to see in a brick tunnel, windows were utterly pointless. They built windowless, heavily upholstered carriages that caused severe panic attacks, forcing a rapid redesign.