Physical media is the King of 3D. A Blu-ray disc offers uncompromised audio (DTS-HD MA) and video bitrates that no streaming site—legal or illegal—can match. Used 3D Blu-rays can be found on eBay for under $5.
WorldFree4u is a well-known site that provides free downloads for a variety of media, including movies, TV shows, and music. However, it is essential to note that: worldfree4u.3d
For accessing 3D models legally and safely, there are several reputable websites. These include: Physical media is the King of 3D
If your interest in "3D" refers to visual design rather than a domain name, you might explore: and music. However