I was showing downtown condos to a client the other day and he introduced me to a really cool website -> https://archive.org/index.php
On the website, for example, you can search for websites that have been completely deleted like corazonvictoria.com. The interesting thing about being able to bring back the developer's old website which was deleted at least 7 years ago is you have access to all the floor plans, features of the building, etc. My client used the website to bring up one of the floor plans to a unit we were looking at in the building.