If you’re dreaming of an unforgettable underwater cave dive but don’t want to travel halfway around the world, consider swapping Sardinia’s Grotta di Nereo for Curaçao’s glowing Blue Room. While Italy’s famed sea cave is celebrated as Europe’s largest—an epic labyrinth of chambers beneath the limestone cliffs of Capo Caccia—it requires boat access and deeper, more complex navigation. In contrast, Curaçao’s Blue Room offers a more relaxed, visually stunning experience that’s just as bucket list-worthy and a whole lot closer to home. Tucked into the island’s northwest coast near Playa Santa Cruz, the Blue Room is a natural sea cave that quite literally glows. Sunlight streams through its single underwater entrance and reflects off the Caribbean’s impossibly clear waters, flooding the cave with a magical, electric-blue hue. Whether you’re diving or snorkeling, the vibe is serene, photogenic, and surreal—a perfect blend of natural wonder and accessibility. You won’t need advanced diving skills or long boat rides to get there—just a short trail walk and a sense of adventure. It’s also steps away from Curaçao’s iconic Mushroom Forest dive site and other secluded beaches, so you can easily turn one cave dive into a full day of exploration. If you’re craving an unforgettable underwater escape without a transatlantic flight, the Blue Room delivers the beauty and thrill, minus the jet lag.