Science Solstice Sunday at the National Zoo

June 21 is the longest day of the year, and the National Zoo is throwing a party to kick off summer the right way. Science Solstice Sunday combines everything my kids love: animals, running around outside, and getting to touch stuff they normally can't touch.

The big draw here is the scavenger hunt. You pick up a card at the visitor center and follow animal clues through the zoo, which is honestly genius because it gives your kids a reason to walk the entire loop without complaining. There are actual prizes at the end, too, so the motivation stays high. My oldest would walk through fire for a sticker, and this delivers.

Scattered along the way are hands-on STEM stations run by real Smithsonian scientists. We're talking about the people who actually work with the animals every day. They set up tables where kids can look at feathers under microscopes, compare animal skulls, and learn about conservation. It's not dumbed-down stuff. Even my five-year-old came away saying something about how pandas have special thumbs.

The animal demonstrations are the highlight, though. Keepers bring out ambassador animals and talk about their behavior, their diet, and what makes them interesting. Last time we saw one of these, the keeper had a barred owl perched on her glove and my toddler just about lost his mind (in a good way).

One thing to know: parking is $30, and it fills up fast. Take the Red Line to Woodley Park or Cleveland Park and save yourself the headache. The walk downhill from the Metro is actually a nice warm-up. Pack sunscreen, bring water, and get your free timed-entry passes online before they run out. They always do.