I was quite surprised to see there isn't really a way to discover indexed 3D web content! So I started one. It crawls rooms from Google and adds image recognition data by using image recognition, which then allows browsing / searching. I plan on adding the major open immersive 3D web technologies and make a full search engine to discover all of this content, which is somehow incredibly difficult still to discover. I found it quite cool to browse the directory in my Quest - it was fun jumping from environment to environment.

Hubs Directory

A searchable community built directory of 3D web content.