Reasons why historic buildings took so long to construct
Why did it take years to build these landmark structures?
With hospitals and health centers being built in record time to treat those stricken with COVID-19, it's a measure of the skill and ingenuity of today's construction workers that these facilities are going up in a matter of days rather than months or years. Back in the past, however, it wasn't uncommon for buildings to take many decades to be completed, sometimes even hundreds of years!
Click through the following gallery and build up a picture of some of the lengthiest construction projects in history, and find out what building took the longest to be signed off.
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