It felt like paddling through soggy cereal. My wife and I were deep within Everglades National Park, struggling to kayak past dense mats of periphyton, a mass of algae, fungi and other organisms.

A room with a view of one of the world’s most active volcanoes? A lodge that echoes The Shining? These six hotels and resorts ...

Plus: How to swim the Colorado River, moms and resistance rangers host a public lands bake sale and a new rural economic ...

From coast to coast, these breathtaking spots prove you don't need a passport or a trust fund to have an unforgettable summer ...