The Northshore Harbor Convention Center will be marking its 10th anniversary with a Diamonds Are Forever celebration from 7 p.m. to midnight April 25 at the center, 100 Harbor Center Blvd., Slidell. There will be entertainment by the Wise Guys and a seated dinner by Patton’s Catering.

Tickets are $75. Sponsorships are available; for information, send email to nhcmarketing@harborcenter.org.

Two free tickets to the celebration will go to the winner of the Northshore Harbor Center Biggest Fan Contest. Through April 1, the center will be accepting entries from people sharing the reasons why they are its biggest fans. Entries should be sent to nhcmarketing@harborcenter.org.

The winner of the Biggest Fan Contest also will win free registration for the Rock the Road 5K and Health and Fitness Expo, which will take place Oct. 17.