That might explain why this Missouri bunker has risen in price over the past couple of years. It was first listed for $200,000 (£157k) in 2022 with Missile Base Specialists 20th Century Castles, who later listed it for $699,000 (£548k). The price rose to $1.4 million (£1.1m) in 2023, before reaching its $2 million (£1.6m) price tag.

The sellers seem to have ditched its earlier Medieval-style décor seen here, stating its unique selling point is that it's “the only bunker for sale near a major city that is fully remodelled”.

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See this luxury home inside a Cold War bunker