Lydia Brown

To avoid crowds, visit Haleakalā summit after 3 p.m.; its sunsets can be as spectacular as its famous sunrises.

The alligator gar, which can grow up to 10 feet long, is one of North America’s largest freshwater fish.

An ice cream truck parks at the south end of the High Line in New York City. The elevated park on an old rail line welcomes some 8 million visitors every year.

Climbers work their way up a formidable ice formation in Iceland.