This WordPress website was my capstone dev project for the Web Development certificate I earned from Seattle Central College in 2011. I was the developer on a team of 3 students (designer, developer, and project manager) who worked with the people at the Volunteer Park Conservatory to create this website for them, pro-bono.
See my working dev install from 2011:
Amazingly, although these clients have implemented a new design, my main codebase and custom hooks are still functioning perfectly for their website! It goes to show that as long as one maintains and updates their WordPress core install codebase, it can last for many, many years.
See their site here: