never fear, the concierge is here

1.

you look at something when you are paying attention to it

don't look at me like that!

2.

you watch something that is happening, or is going to happen

I can't talk now - I'm watching the game!

3.

you see something when it comes to your eyes, regardless of your attention

did you see that flash of lightning last night?

4.

but also - for a complete experience we can use see

Come around tonight - I want to show you my holiday snaps.
I've already seen them.
For a breathtaking beautiful view of the Taj Mahal, one has to see it by moonlight.