• Smithsonian National Zoological Park (map)

"Drink beer. Save wildlife! Join Friends of the National Zoo at Washington, D.C.'s best beer festival on July 20. Enjoy great times and great brews with unlimited beer tastings from more than 70 breweries, exotic animal encounters, live music and entertainment, and fare from popular food trucks—it's a unique after-hours Zoo experience.

Proceeds benefit the Smithsonian's National Zoo and Conservation Biology Institute's mission to save species."

Tickets are $50 for Friends of the Zoo members, and $65 for non-members. Buy them here!