The Tavern at Phipps is a great restaurant. They have plenty of outdoor seating and great people watching of which they are legendary.
I recommend the sandwiches. These are sandwiches that would make Dagwood happy.
It is not possible to eat the entire Reuben. If you do, I strongly recommend an Angioplasty.
The burgers are great. They butter the bun, which is don't like.
The barbecue chicken breast is excellent too.