Located between Michigan's Upper and Lower Peninsulas in scenic Lake Huron, this car-free island is perfect for travelers in need of a laid-back summer vacation. Enjoy the mild weather (think: highs in the 70s) from the historic Grand Hotel's 660-foot front porch, the largest in the world. Or, soak up the sunshine while kayaking, biking Lake Shore Boulevard and hiking to the Instagram-worthy Arch Rock. For a classic Mackinac Island experience, take a horse-drawn carriage ride through the island's downtown, stopping to sample some of Mackinac's famous fudge along the way. Meanwhile, history lovers will want to save time for a tour of Revolutionary War-era Fort Mackinac.

In Grand Teton National Park, Wyoming's snow-capped Teton Mountains rub elbows with the Snake River, Jackson and Jenny lakes, wildflower fields, swamps and more. Trekking to vistas like Inspiration Point and Phelps Lake Overlook are common ways to take in the park's natural beauty, but if you're looking to exert less energy, explore the region by car or boat. Don't focus too much on the horizon, though, as moose, elk, bears and bison all call the park home and occasionally wander near visitors. Another plus for this park is its proximity to the rustic mountain town of Jackson Hole.

Known for its diverse cultural scene, the Big Apple boasts so many things to do that it puts most of its U.S. peers to shame. Whether you spend the day perusing The Metropolitan Museum of Art's exhibits, catching a show on Broadway or visiting Ellis Island and the iconic Statue of Liberty, you'll never find yourself feeling bored here. Consider a bus tour to experience different neighborhoods or a food tour to get acquainted with its wide-ranging cuisine. When you need some respite from the city's busy nightlife and soaring skyscrapers, retreat to sprawling Central Park or the artsy High Line.

With idyllic beaches and verdant parks, Maui offers ample opportunities to relax. Here, you can admire the stunning scenery as you cruise along the Road to Hana, fly above the Hawaiian island on a helicopter tour or lounge across the black sands of Wai'ānapanapa State Park. If you'd rather cool off than sunbathe, sign up for a snorkeling tour. For an unforgettable experience, make a reservation to see the sunrise at Haleakalā National Park, home to Maui's highest peak. Sampling Maui's seafood is also a must, but don't overlook other island delicacies like haupia, a creamy coconut custard.

Considered the gateway to Acadia National Park, this laid-back town on Maine's Mount Desert Island provides a great home base for exploring the park. Along with its cozy bed-and-breakfast accommodations, Bar Harbor boasts fresh-as-it-gets seafood in waterfront venues and locally owned shops showcasing unique Maine souvenirs. When you're not trekking through the national park, join a boat tour – the waters surrounding Mount Desert Island are a popular feeding ground for whales in summer – or stroll along the scenic Shore Path.