The Sammamish Chamber of Commerce will host the fourth annual Sammamish Nights Aug. 18 at the Sammamish Commons.

The event, which is the only 21 and older event for the city, has doubled the number of wineries and restaurants, added desserts, ales, spirits and fine art from Sammamish Arts Fair artists.

Ambience and @five will provide live music.

The event begins at 6 p.m. Tickets are $40 in advance and include the entire evening experience.

Babysitting will be offered by Columbia Athletic Club for $20 per child.

More details are available at www.sammamishchamber.org.