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The star of a zillion souvenirs and photos, New York's Statue of Liberty National Monument continues to inspire the masses almost 140 years after its dedication. Ride the ferry out, go for a climb inside (reserve well in advance) and don't miss nearby Ellis Island where you can find out what happened to the teeming immigrant masses who once gazed with such hope at the statue.

Planning tip: Be sure to include the nearby Governors Island National Monument in your NYC visit. This former military base sits right in the harbor and has been transformed into a spectacular park with sweeping views of the Statue of Liberty and the NYC skyline.

No picture can capture the massive majesty of Grand Canyon National Park. From viewpoints along the roads along the south rim of Arizona, you can get glimpses of the muddy Colorado River winding along the bottom far below. Striations of color in the nearly endless layers of rocks change with the light throughout the day. The geologic spectacle is nearly impossible to imagine until you've seen it for yourself.

Detour: Southeast of the main Grand Canyon road, off Hwy 89, Wupatki National Monument preserves a beautiful rock city built by Native Americans 900 years ago. It's one of many national park sites in Arizona and New Mexico that showcase the legacies of the complex cultures that lived here before European contact.

Yosemite National Park is a playground for the senses and an essential stop for any first-time visit to California. If you haven't been, start planning a trip now! Standing in the valley, with a burbling stream nearby and taking in the vista of granite El Capitan and Half Dome plus the long, coursing drama of Bridalveil Fall will stay with you for a lifetime. Head up to the high Alpine meadows, where rivers are born amidst elemental beauty.

Planning tip: Try to visit Yosemite in spring or fall when crowds are fewer and the colors are either freshly reborn or rich with autumn patinas. If visiting in summer, check the for essential planning tips, reservations and more.

A circle of calvary troops dying to the last man is at the heart of in the dry, horizon-filling plains of eastern Montana. The truth about the events of that June in 1876 is often lost amidst the legend of Colonel George Custer and his last stand. The story of how the Plains Indians scored their overwhelming victory at what they called the Battle of Greasy Grass and the events that led up to it, including Custer's genocidal campaign against Native Americans, are told here, putting the battle into context.

Detour: Although the über-popular Yellowstone National Park is an easy drive west, consider going east to a circle of spectacular but lesser-known national parks including Grand-Canyon-like Theodore Roosevelt National Park, soaring Devil’s Tower National Monument (be sure to watch the movie Close Encounters of the Third Kind first) and the scorching hell of Badlands National Park. Throw in Mount Rushmore National Memorial for the pure kitsch of an American icon.

Dismissed by dullards as 'flyover country', Indiana Dunes National Park is a beautiful rejoinder right along the shores of Lake Michigan in Indiana. Following the lakeshore, the park offers miles of white-sand beaches where the sand is actually white (as opposed to the over-hyped 'white' of tourism puffery).

In summer you can always find a beach to call your own while you swim in the seasonally warm lake water. At night you can roast marshmallows by the lights of the Chicago skyline poking above the horizon. Add in hikes through ancient oak forests and you'll understand why the region is proudly known locally as the Third Coast.

Detour: Barely a half-day's drive southwest to the center of Illinois in Springfield, the Lincoln Home National Historic Site captures a glimpse of the life of the man who led the US through the carnage of the Civil War while articulating ideals of freedom and democracy that remain as timeless as ever.

It's an easily understood claim: the longest stretch of undeveloped coast in all of Florida is protected by Canaveral National Seashore. While the name may inspire thoughts of moon launches and space exploration, this long barrier island of dunes and lagoons is north of the Cape Canaveral launch facility. It's a natural wonderland with thousands of native species of plants and animals that can be explored on hikes and walks. Or you can just frolic on the fine sand of the surf-fringed beaches.

Detour: No trip to the Canaveral seashore is complete without a visit to the Kennedy Space Center Visitor Complex, which honors and explains 60 years of rocket launches that began on these sandy plains by the Atlantic. Just try to get your head around the enormous Saturn 5 rocket used for the Apollo missions to the moon.

Raw rivers of ice meet the churning waters of the Pacific far north in Alaska at . It's nature at its most primal: fjords of water lead to vast granite mountains cleaved by glaciers, which edge down to the sea where huge icebergs hive off and float away.

Whether from a cruise ship, a small boat from shore, or by float plane or helicopter, it's a spectacle not to be missed, especially given the threats to the glaciers from climate change.

Detour: Once you've ventured north to Alaska, make time for more of the state's 15 national park sites. For a real odyssey, venture to distant and isolated Kobuk Valley National Park, gaze at the continent's highest peak at the famous Denali National Park and Preserve, or thrill to tales of the Yukon at the .

Find out just what was meant by 'one if by land, two if by sea' at in Massachusetts, which brings together dozens of sites great and small that sparked the Revolutionary War from 1775 onwards. Most are easily visited following well-documented walking routes such as the Freedom Trail. On the narrow lanes of this colonial city, it's easy to be transported back 250 years as you visit iconic sites as diverse as the Paul Revere House and the .

Planning tip: Boston's thicket of historic sites is run by various branches of the federal and state governments as well as private entities, all with differing hours and admission policies. While the National Park Service provides a unifying umbrella, study the list in advance and make a few selections so you're not overwhelmed by choice once you're there.