Harvard Stadium in Allston, Mass., is 109 years old. It was the “world’s first massive reinforced-concrete structure,” according to this piece, and used nearly 9,260 cubic yards of concrete. The National Historic Landmark has undergone many changes over the years, and those are highlighted in a slide show.
![](https://civilengineer.co.in/wp-content/uploads/2012/11/Slide-show-Worlds-first-massive-reinforced-concrete-structure_civilengineer.co-7.jpg)