<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;X3D" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;X3D</a><p><a href="http:&#x2F;&#x2F;www.web3d.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.web3d.org&#x2F;</a><p><a href="http:&#x2F;&#x2F;www.x3dom.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.x3dom.org&#x2F;</a><p>Note especially the 3d background &#x27;images&#x27; on the x3dom site. Try dragging them around with your mouse.