Space Elevator is quite terrible. Opportunity cost is way too high.
Internet doesn't do anything for me in most games but I've also had games where it secured my victory.
Hagia Sophia is pretty terrible as well.
Cristo is indispensable if you're doing some late game warring and need to switch between universal suffrage for rush buying and police state for production/lowering war weariness.
But I voted for Chichen Itza because it's just abysmal. All your cities get an extra defense bonus during an era when you should be peacemongering. Even if you ARE warring, that extra cultural defense only kicks in if you're on defensive, which you never want to be unless you're playing to some specific protective/defense strategy.
Internet doesn't do anything for me in most games but I've also had games where it secured my victory.
Hagia Sophia is pretty terrible as well.
Cristo is indispensable if you're doing some late game warring and need to switch between universal suffrage for rush buying and police state for production/lowering war weariness.
But I voted for Chichen Itza because it's just abysmal. All your cities get an extra defense bonus during an era when you should be peacemongering. Even if you ARE warring, that extra cultural defense only kicks in if you're on defensive, which you never want to be unless you're playing to some specific protective/defense strategy.