Allows to visit the most famous skyscrapers in the world

Skyscraper
Free
Offline
http://www.skyscrapersim.com/

Skyscraper aims to be a fully-featured, modular, 3D realtime building simulator, powered by the Scalable Building Simulator (SBS) engine. The main feature SBS provides is a very elaborate and realistic elevator simulator, but also simulates general building features such as walls, floors, stairs, shaftwork and more.