Tavern on the Square is in the old Crescent Moon building.  The Tavern is a bit more laid back than most places on O street.  And in my opinion, the courtyard behind the bar is  the most beautiful space in  Lincoln.  It is small and intimate. There are just a few tables  which are surrounded by trees, white lights enclosed by historic brick buildings. Â
The best part about the Tavern is the dress code: No Afflication and No Tap Out  so save your fancy shirts for O street ;)