Cost: $35 in advance, $40 at the gate; two-night pass available for $65 (must be 21+)

Organizer: Old St. Pat's Church

What to expect: Thousands of people, music, food and raffles.

Why to go: Oprah called it the place to meet your match after more than 70 couples met here and later married. If you value your book club membership, you'll go.

Additional info: Old St. Pat's Church is Chicago's oldest public building, and the event raises funds for its ongoing campus expansion. The Block Party typically sells out early, so get your tickets in advance. Five drinks are included with admission. There is also the "Party Within the Party": a Friday night (6-10:30 p.m.) 30-and-over bash hosted by Connections. There's also a Saturday night party for everyone from 6-10:30 p.m. Look for the sign in front of the church.

Centerstage Reviewer: Ben Rubenstein