A wonky Wellington building is set to be even more crooked than the famous Leaning Tower of Pisa.

A proposed new airport control tower will be on a 12.5 degree lean into the prevailing northerly wind.

That's almost eight degrees more than Pisa's tower.

Architect Evzen Novak says it's a bit different building something on a deliberate slant.

"It sits on base isolators and it's to the most modern seismic engineering standards, so there isn't really any comparison technically between the two buildings."