You can create a NEW VENUE by two route. 

A direct route is, after you login, click on the welcome menu and scroll down to find "ADD NEW VENUE" sub-menu. click here to be redirected to a new page to add your venue.

Now you will be redirected to a form where you can add the elaborate details of your Venue like, it's location in google Map, landmark,its image galleries, its halls with min and max capacities to take crowd and other facilities like parking, A/C etc.