Big Cypress National Preserve 50th Anniversary Logo
The National Park Service has done a number of anniversary logos over the years and I love how they let the colors and styles of the area influence each one instead of a more copy and paste approach. This is another examples of that with unique fonts, bright colors, and imagery that have a different vibe than other logos but come together to create yet another tidy design that can be used in many situations.
Source:
https://www.nps.gov/bicy/planyourvisit/50th-anniversary.htm
