Pertamina Energy Tower | SOM

Zaha Hadid Generali Tower tops out at 44 floors

Hourglass-Shaped Tower | MVRDV

Genesis Tower | Taras Kashko + Jawad Al Tamimi

Gran Mediterraneo | David Tajchman

Montjuic Communications Tower | Santiago Calatrava

Frankfurt New Metzler Tower | BIG

Baku Flame Towers | HOK

Chicago Spire | Santiago Calatrava

Turning Torso | Santiago Calatrava

Ultra-Thin Condominium Tower | Foster and Partners

Hearst Tower | Foster and Partners