You can drag to rotate the world around the camera look-at point by pressing ALT and the left mouse button while dragging:
You can also rotate the world around the eye point in Fly or Walk navigation mode by pressing the left mouse button while dragging. This gives the illusion that the world is moving around you as you rotate your head.
How the world rotates depends on the distance to the camera look-at point:
Clicking a different point in the world resets the look-at distance. The distance from the eye point to the point you click becomes the new look-at distance.
Note: The point you click does not become the new camera look-at point. The camera look-at point is always in the center of the screen. However, clicking points that are nearby or far away changes the look-at distance.
When you click to reset the look-at distance, you can click without selecting the object at the cursor.
To rotate the world around the camera look-at point:
To rotate the world around the eye point:
To change the look-at distance, click a point that is at a distance similar to what you want for the look-at distance.
To change the look-at distance without selecting an object when you click, press ALT while clicking the point.