Many young, aspiring civil engineers enter the discipline because of structures. Whether soaring skyscrapers or elegant bridges, structures are the extroverted side of civil engineering. The area of structures also has many different perspectives for sustainability. Whether looking at materials, design, or evaluation, there are many applications to incorporate sustainable practices. This chapter will cover three material related themes and one theme introducing a more sustainable design methodology. Specifically, this chapter will cover these four areas: Fly ash as a supplement to Portland cement, bamboo as a structural material, Design for Adaptability and Deconstruction (DfAD), and finally, the fast-growing product of Cross Laminated Timber (CLT).