**[Learn more about this project.](https://www.myleszhang.org/2020/04/16/st-pauls-cathedral/)** Download includes access to editable CAD source files. This model shows the innovative triple dome at St. Paul’s Cathedral in London. This scale model is created from measured plans of the structure and is accurate to the foot. The dome consists of three interlinked structures: * **The Inner Dome** – visible from the cathedral interior and purely for show * **The Middle Dome** – a brick cone that is invisible from below but supports the 850 ton lantern above * **The Outer Dome** – a wood and lead-roofed structure visible from the cathedral exterior The Inner and Outer Domes are decorative, while the Middle Dome is the true weight-bearing support system.