We've got dozens of fun ways to celebrate your 40th birthday, including unforgettable activities, creative party ideas, low-key birthday activities, and more.

Rainbow-Themed Pool Party. Make a splash for your 40th birthday with a fun pool party! A rainbow theme will inject vibrant colors and even more lively energy into the celebration.

40th Birthday Vacation Ideas-Domestic destinations New York City, New York. The Big Apple has something to offer everyone, from world-class museums and Broadway shows to iconic landmarks like the ...

We rounded up the best 40th birthday gift ideas, including bestsellers and editor favorites in beauty, home, fashion, and wellness. Skip to main content. Popsugar. Subscribe. Go to Navigation.