Writing — Page 18

Niagara Falls from the American side — the Horseshoe Falls and American Falls, the Maid of the Mist boat tour, and the improbable scale of moving water.

Arches National Park in southeastern Utah holds the world's highest concentration of natural stone arches — over 2,000 of them — in a landscape so otherworldly it barely feels like it belongs to this planet.

Bryce Canyon National Park in southern Utah holds the largest concentration of hoodoos on Earth — thousands of tall, narrow rock spires in shades of red, orange, and white that fill the amphitheater like a frozen crowd.

A two-tiered 113-foot waterfall framed by perfect columnar basalt in Oregon's Umpqua National Forest — one of the most photographed waterfalls in the Pacific Northwest.

A 2,000-foot-deep canyon of 1.7-billion-year-old Precambrian rock in western Colorado — one of the most dramatic and least visited national parks.

A quiet Oregon Coast town with a 2,000-year-old ghost forest of buried sitka spruce stumps emerging from the surf at low tide.

The tallest trees on earth along 37 miles of pristine California coastline — a place that requires standing still and looking up for several minutes before it makes sense.

Glacier National Park in northwestern Montana is one of the most dramatic landscapes in North America — alpine meadows, ancient glaciers, turquoise lakes, and wildlife around every bend on the Going-to-the-Sun Road.

California's volcanic spire park with California condors overhead, talus caves, and rock climbing on ancient lava formations moved by the San Andreas Fault.