The 14 Best Adventures in The United States

Yellowstone is the world's first national park and still its strangest, sitting atop a supervolcano that surfaces as thousands of geysers, hot springs, and mudpots.

Old Faithful erupts on a near-hourly schedule, while the Grand Prismatic Spring's rainbow colours come from heat-loving bacteria.

Beyond the geothermal basins, the park holds free-roaming bison, elk, wolves, and grizzly bears across nearly 9,000 square kilometres of forest and canyon.

The Maroon Bells are two peaks — Maroon Peak and North Maroon Peak — in the Elk Mountains of Colorado, rising to 4,317 and 4,273 metres respectively.

The reflection of the burgundy-coloured peaks in the still waters of Maroon Lake, particularly in autumn when the surrounding aspen trees turn gold, is one of the classic sights of the American Rockies.

Yosemite Valley is a granite gorge cut by glaciers, with El Capitan and Half Dome rising thousands of feet above the valley floor and waterfalls dropping straight off the rim.

Beyond the valley, the park holds giant sequoia groves, alpine meadows, and high-country lakes reached by the seasonal Tioga Road.

It's one of the birthplaces of American rock climbing, and climbers on El Capitan's face are visible from the valley floor with binoculars.

The Grand Canyon is one of the world's great natural wonders — 446 kilometres long, up to 29 kilometres wide, and over 1,800 metres deep, carved over millions of years by the Colorado River.

The layered bands of red rock reveal two billion years of geological history and glow with extraordinary colour at sunrise and sunset.

The Wave is a sandstone rock formation in the Coyote Buttes area of the Paria Canyon-Vermilion Cliffs Wilderness in Arizona, famous for its colourful, undulating forms created by 190-million-year-old Jurassic sand dunes.

The swirling bands of red, orange, and pink sandstone make it one of the world's most extraordinary geological formations.

The Teton Range rises abruptly and without foothills from the flat valley floor of Jackson Hole, creating one of the most dramatic mountain frontages in the Americas.

Below it, the Snake River, a chain of glacial lakes and open sagebrush flats hold moose, elk, bison and both black and grizzly bears.

Trails range from flat lakeshore loops to serious alpine climbs within the same few miles of road.

North America's tallest waterfall drops in three tiers down a granite cliff face in Yosemite Valley, at its thunderous peak each spring when snowmelt sends it roaring.

By late summer it can slow to a trickle or vanish entirely, so timing genuinely changes what you see.

The valley floor meadow below offers an open, unobstructed view, with El Capitan and Half Dome in sight at the same time.

Zion's main canyon is a half-mile-deep slot of red and cream sandstone carved by the Virgin River, with the Narrows letting visitors wade upriver between walls that close in overhead.

The valley floor is reached only by a free shuttle in peak season, keeping the canyon quieter than the crowded parking lots suggest.

Angels Landing's chained final pitch is the park's signature scramble, but most of the canyon is accessible on flat paved trails.

Haleakala's summit on Maui sits at 3,055 metres above sea level, placing it above the clouds for one of the world's most famous sunrise experiences.

The volcanic crater contains a moonlike landscape of cinder cones and lava flows extending 11 kilometres across and 800 metres deep.

Mount Rainier is an active stratovolcano rising 4,392 metres above the Puget Sound lowlands of Washington State, making it the most topographically prominent peak in the contiguous United States.

In summer, its slopes are carpeted with wildflower meadows and it is reflected in the lakes of Paradise and Reflection Lakes.

A steep 2.

5-mile round trip up Zion Canyon's sandstone spine, finishing on a knife-edge ridge with chain handholds and 1,200-foot drops on both sides.

The switchbacking approach up Walter's Wiggles gives way to an exposed scramble that rewards climbers with a sweeping view down Zion Canyon.

A permit lottery now limits how many hikers tackle the chains at once, since it's not for anyone uneasy with heights.

Lake Tahoe straddles the border between California and Nevada in the Sierra Nevada mountains, its remarkable clarity allowing visibility to a depth of over 20 metres.

Surrounded by ski resorts, pine forests, and granite peaks, it offers spectacular hiking and water sports in summer and world-class skiing in winter.

An 11-mile coastal trail along Kauai's Na Pali Coast, climbing in and out of fluted, jungle-green valleys with the Pacific breaking against sea cliffs far below.

The route crosses Hanakapiai Stream, skirts the exposed Crawler's Ledge, and ends at the remote Kalalau Valley and beach.

Permits are required past the two-mile mark and are famously hard to secure, often selling out within seconds of release.

The paved Vine Trail runs 12.

5 miles between downtown Napa and Yountville, weaving past manicured vineyard rows, stone wineries and oak-dotted hills.

Quieter backroads through Carneros add rolling, sheep-grazed vistas that turn yellow with wild mustard flowers each spring.

The route is flat enough for casual riders, with tasting rooms, bakeries and picnic stops built into most itineraries.