How long did it take to build cologne cathedral?

80 years or more

Ely Cathedral was built from 1083 to 1375, so construction spread over 292 years. This is actually fairly typical for a medieval cathedral, and not an excessive amount of time to build from...

365 years

It took about eight years to build Westminster Cathedral.Construction on Westminster Cathedral was begun in 1895 and finished in 1903. The cathedral was consecrated in 1910.There is a link below.

Salisbury Cathedral was built in just 38 years.