Some 615,000 visitors a year flock to the hard-packed gray sands of Padre Island National Seashore along the Gulf Coast of Texas. This undeveloped national seashore boasts an abundance of natural wonders in its tidal flats, dunes and grasslands. Ample solitude can be found on it 65-mile stretch of beach, including 60 miles that are only accessible by four-wheel drive. The Traveler’s Lynn Riddick takes an in-depth look at Padre Island National Seashore and finds that not only is it a popular destination for campers, windsurfers, and anglers, but history buffs might find intrigue in the remnants of early settlements, cattle ranches and military installations found there.