In this webinar, Buildmedia showed an interactive application to visualize and sell apartments before they are built. The project uses real-time ray tracing technology for the most realistic representation possible.
https://dev.epicgames.com/community/learning/talks-and-demos/eDE/real-time-ray-tracing-put-to-test-on-a-real-project-with-nvidia-quadro-rtx-webinar-unreal-engine