May 20-21 - NATO Summit. Chaired by the NATO Secretary General Anders Fogh Rasmussen and hosted by President Obama, NATO Summits are held annually to provide world leaders with a platform for strategic diplomatic and military planning. McCormick Place. More info.

May 21 - Attention NATO delegates. $1 cocktails and glasses of wine as Bar Louie unveils a new beverage menu featuring eight new cocktails, completely revamped wine platform, and stronger focus on local beers. Bar Louie, 333 North Dearborn Street. Map. More info.

May 22 - River North Residents Association Quarterly Community Meeting. Cook County Board President Toni Preckwinkle will be the special guest presenter. Join your neighbors for a good time, great food, and valuable information. All are welcome! Scoozi Restaurant, 410 West Huron Street. Networking reception 5:30-6:30 p.m. Community Meeting 6:30-8:00 p.m. Map.

May 22 - Pro Bowler Charity Challenge at 10pin Bowling Lounge. Desmond Clark's challenge will benefit 88 Wayz Youth Organization, a non-profit mentoring, in-school program that assists youth in realizing their dreams and reaching their full potential. 7-10 p.m. Map. More info.

May 24 - Historic River North Walking Tour. Learn the history of the buildings you pass every day in River North. Led by tour guide Thomas Besore, this tour will begin at the Reid Murdoch Building and end at Cityscape Bar at the Holiday Inn Mart Plaza. Along the way hear the interesting facts about many historic places. Only 30 tickets will be sold so register early for this sure-to-be-a-sellout event. 5:45-8:00 p.m., Reid Murdoch Building, 325 North LaSalle Street. Map. More info.