'Go and open the door'

I was reading the poem 'Jdi a otevri dvere' by Miroslav Holub yesterday. Holub was a poet and immunologist from the Czech Republic. He once said that he would like his poems to be read by people as they make their way to football matches.

Go and open the door

Maybe outside there's a tree

or a wood, 

a garden,

or a magic city.

Go and open the door.

Maybe a dog's rummaging.

Maybe you'll see a face,

or an eye,

or a picture

of a picture.

The poem continues to suggest that maybe there is '...a hollow wind' or '...only the darkness ticking'? 

Are you brave enough to go and open the door?

What do you think you might see?