When most people think of island escapes, their minds drift toward the Caribbean or the South Pacific. But the United States is home to a stunning array of islands—each offering unique scenery, culture, and outdoor adventure. Whether you’re craving white sand beaches, dramatic coastlines, lush forests, or quaint seaside towns, these 15 beautiful U.S. islands deliver.
1. Maui, Hawaii
Why it’s beautiful: Known as “The Valley Isle,” Maui is famous for its lush valleys, volcanic peaks, and golden beaches.
Top things to do: Drive the breathtaking Road to Hana, watch the sunrise at Haleakalā National Park, snorkel at Molokini Crater, and relax on Kaanapali Beach. Don’t miss a traditional luau or whale watching (in season).
2. San Juan Island, Washington
Why it’s beautiful: Nestled in the Pacific Northwest, San Juan Island offers pine-covered landscapes, rocky beaches, and serene waters filled with orcas.
Top things to do: Go whale watching in the Salish Sea, explore Friday Harbor, and visit Lime Kiln Point State Park for epic sunsets. Kayaking, cycling, and art galleries round out this peaceful retreat.
3. Key West, Florida
Why it’s beautiful: This southernmost point in the continental U.S. dazzles with turquoise water, pastel architecture, and a festive Caribbean vibe.
Top things to do: Catch the sunset at Mallory Square, tour Ernest Hemingway’s home, snorkel in Dry Tortugas National Park, and savor key lime pie on Duval Street.
4. Nantucket, Massachusetts
Why it’s beautiful: A postcard-perfect New England island with rose-covered cottages, sandy dunes, and cobblestone streets.
Top things to do: Bike to Siasconset, climb the Brant Point Lighthouse, enjoy fresh seafood at Straight Wharf, and shop at high-end boutiques. Summer brings mild weather and ocean breezes.
5. Kauai, Hawaii
Why it’s beautiful: Nicknamed the “Garden Isle,” Kauai is a lush paradise of waterfalls, tropical rainforests, and the jaw-dropping Nā Pali Coast.
Top things to do: Hike the Kalalau Trail, take a helicopter tour of Waimea Canyon, swim at Hanalei Bay, and kayak down the Wailua River. It’s the most laid-back of the main Hawaiian islands.
6. Mackinac Island, Michigan
Why it’s beautiful: This charming Great Lakes island is known for its Victorian charm, horse-drawn carriages, and sweeping lake views.
Top things to do: Tour Fort Mackinac, sample world-famous fudge, rent a bike to circle the island, and stay at the historic Grand Hotel. No cars are allowed, adding to the time-capsule feel.
7. Amelia Island, Florida
Why it’s beautiful: With 13 miles of soft beaches, moss-draped oaks, and a relaxed Southern charm, Amelia Island is a peaceful Atlantic Coast escape.
Top things to do: Visit Fernandina Beach’s historic downtown, horseback ride along the shore, explore Fort Clinch State Park, and go sailing or shrimping on the Intracoastal Waterway.
8. Block Island, Rhode Island
Why it’s beautiful: Just 13 miles off the coast, Block Island is a rugged, windswept gem with bluffs, lighthouses, and quiet beaches.
Top things to do: Hike the Mohegan Bluffs, swim at Mansion Beach, and visit the Southeast Lighthouse. It’s ideal for nature lovers and cyclists.
9. Molokai, Hawaii
Why it’s beautiful: Molokai is Hawaii’s best-kept secret—an island where nature reigns and tourists are few.
Top things to do: Explore the world’s tallest sea cliffs at Kalaupapa, visit Halawa Valley, and snorkel at the barrier reef. You’ll find authentic Hawaiian culture and zero chain resorts.
10. Orcas Island, Washington
Why it’s beautiful: The largest of the San Juan Islands, Orcas is a forested, hilly wonderland with dramatic coastlines and inland lakes.
Top things to do: Hike Mount Constitution for panoramic views, kayak the island’s rugged shores, visit Moran State Park, and browse the artisan shops in Eastsound village.
11. Hilton Head Island, South Carolina
Why it’s beautiful: With wide sandy beaches, live oaks, and world-class golf courses, Hilton Head is both scenic and sophisticated.
Top things to do: Bike along 60 miles of trails, tee off at Harbour Town, spot dolphins on a boat tour, and explore the Sea Pines Forest Preserve.
12. Big Island (Hawaiʻi Island), Hawaii
Why it’s beautiful: From snow-capped mountains to lava-strewn deserts and tropical rainforests, the Big Island boasts the most diverse landscapes in Hawaii.
Top things to do: Visit Hawai‘i Volcanoes National Park, snorkel with manta rays in Kona, stargaze on Mauna Kea, and relax on black and green sand beaches.
13. Fire Island, New York
Why it’s beautiful: A car-free barrier island off Long Island, Fire Island is a quiet haven of beaches, dunes, and charming boardwalk communities.
Top things to do: Visit the Fire Island Lighthouse, stroll through Sunken Forest, and enjoy low-key beach life in towns like Ocean Beach or Cherry Grove.
14. Catalina Island, California
Why it’s beautiful: Just 22 miles off the Southern California coast, Catalina offers Mediterranean vibes with palm trees, hills, and a charming harbor town.
Top things to do: Snorkel or dive in the clear waters of Lover’s Cove, zip line over canyons, hike the Trans-Catalina Trail, and wander around colorful Avalon.
15. St. Simons Island, Georgia
Why it’s beautiful: Part of Georgia’s Golden Isles, St. Simons blends maritime forests with beachside serenity and Southern hospitality.
Top things to do: Climb the St. Simons Lighthouse, kayak through salt marshes, relax under mossy oaks, and dine at waterfront seafood restaurants.
Amanda O’Brien is the creator and editor of The Boutique Adventurer. She has visited 80 countries and is a member of the British Guild of Travel Writers as well as the IFTWTA. She is passionate about wine had has just completed Level 3 of the WSET. Born in Australia, she lives in London.