Most people blast down the Overseas Highway from Key Largo to Key West with maybe one stop for key lime pie. A spot on Grassy Key called The Lagoon is making a case for slowing down. It's a waterfront activity hub in Marathon where you can spend a full day in the water, then refuel in a plant-filled beer garden without getting back in the car.

The main draw is the water itself. The Rhum Runner Aqua Park is a giant inflatable obstacle course floating on the lagoon — climbing walls, trampolines and slides, best attempted with low expectations and a dry bag. For something more technical, Keys Cable Park runs wakeboarding behind an overhead cable system instead of a boat. There are two separate cables, split by skill level, and since only one rider is on the line at a time, the tow speed can be tuned to whatever you can handle. Beginners apparently pick it up quickly; reviewers report getting upright after years away from a board. Kiteboarding and foilboarding happen here too.

The Lagoon also offers e-foiling lessons on its calm, flat water — an excellent setup for first-timers trying to stand on a motorized hydrofoil board. One writer took a lesson and was standing within an hour, which says a lot about both the conditions and the teaching.

Between sessions, the property doubles as an open-air gallery. More than 20 murals cover the grounds, and an artist-in-residence program keeps bringing painters back to add new ones, so the walls change between visits.

When you're done, Bongo's Botanical Beer Garden sits a few steps from the water — a courtyard wrapped in greenery and more murals. Bananas, breadfruit, tropical cherries and coconuts grown on-site find their way into the food, and the drinks list runs to over 20 craft beers, including local brews. Cocktail-wise, expect Keys-appropriate options like a Mangrove Margarita, Lagoon Punch and Grassy Gatorade, plus the Rhum Runner, a drink invented in the Keys roughly 50 years ago.

Practically speaking, The Lagoon sits about 50 minutes from Key Largo and around an hour and 20 minutes from Key West, entirely along the Overseas Highway — one of the most scenic drives in the US, so the journey is part of the point. Curry Hammock State Park, a strong paddling destination, is under four miles away, and the Grassy Flats Resort and Beach Club is a mile down the road, close enough that you can borrow one of its bikes and ride over.

This one suits families with kids old enough for the aqua park, groups who want a full day of activity without a boat charter, and anyone road-tripping the Keys who'd rather break the drive with something memorable than push straight through to Key West. Pair it with a couple of nights in Marathon and you've got an easy, active Keys break with the sunset crowds of Key West still within reach.