What happened to textures in new Unity?

I was using Unity 5.5.2 and every 3D asset I imported showed up in Project Tab with textures that were applied. Now I upgraded to Unity 2017.3 and no longer I can see anything like Textures in the tab. What happened to them? How can I apply textures to an imported object?

Ok, I already know. Just ticked Use External Materials (Legacy) in Materials import tab.