Start by clicking "Create" and choosing the desired venue type from the dropdown menu.  

Complete as much information as you can on the property. Note: Name, Subtype, Address, and Region are required fields.

If you choose to add a tout image, this will be the thumbnail for that venue.

When you're ready to go, click "publish." Auto-populate a slug (the url) using the magic wand tool and edit it as necessary. Voila! You can now pull this venue into other content types using the asset finder.