Finland has spent decades digging caves into its bedrock. Now, as Russia rears its head, nervous Finns want to know: “Where’s ...

Explorers entered a flooded cave system hidden deep in the forest, where light barely touched the water. As they swam through ...

Weeki Wachee Springs State Park in Florida has enchanted visitors since 1947 with underwater performances by "real" mermaids.

It looked like a small hole next to the road, half-covered in weeds. But as we floated deeper inside, the walls widened into ...

Tourists in Greece are reeling from shocking new beach prices. Here's why a simple seaside day now costs a small fortune and ...

Deep in the cave recesses, springs feed a stream. But this isn’t fresh mountain water. It’s a sulfidic brew, loaded with ...

Deep inside a pitch-black chamber on the Albanian–Greek border, scientists have stumbled upon something straight out of a ...

Experts say the Colorado River shows no sign of recovery. The Republic asked water providers how they would survive shortages.

What makes South Lake particularly fascinating is its mysterious nature – it’s one of two bodies of water in the cavern ...

Thailand's natural pools offer travelers a sense of wild wonder, but so too do the cenotes and pyramids of Mexico's Yucatán ...

Offering everything from honeyed sands and rock-carved tunnels to shady pines and island coves, these are some of the best under-the-radar beaches that Portugal has to offer.

There’s something primal about standing before a waterfall. The ground trembles, mist clings to your skin, and the roar of ...