Please use a browser that supports "canvas"

I recommend initially pressing "z" to switch camera to perspective.

Then move the mouse to look up, and move forward to see the whole scene

Usage:

Look around: Move mouse
Move horizontal left: (Arrow Key <- or "A")
Move horizonatal right: (Arrow key -> or "D")
Move forward in camera look direction: (Arrow key up or "W")
Move back in camera look direction: (Arrow down up or "S")
Zoom in: ("O" or mouse scroll)
Zoom out: ("L" or mouse scroll)
Switch Camera mode between Orthograpic and Perspective: "Z"