I fly FPV drones for fun and love flying them through race hoops. 

I thought this Flight Sim could do with some hoops to fly through so I added some :-) Yes, they're probably not to scale and I couldn't get the portal effect from this cool model to render with in the game with the SDK so had to remove it.

Link to model used - https://sketchfab.com/3d-models/stargate-jp4wKz6tRk1kpemRWywOSHx4ogK

Search for Giza or the Pyramids POI and they are right there. You might have have to fly up pretty close to load them the first time.