1. Oahu:
- Waikiki Beach: Sunbathe, swim, and surf at this iconic beach.
- Diamond Head: Hike to the summit for stunning panoramic views.
- Pearl Harbor: Visit the USS Arizona Memorial and explore the history of WWII.
- Honolulu: Experience vibrant nightlife, shopping, and cultural attractions.
- Hanauma Bay: Snorkel or scuba dive in this marine life conservation area.
- Polynesian Cultural Center: Immerse yourself in Polynesian traditions and performances.
2. Maui:
- Haleakala National Park: Watch the sunrise from the summit of Haleakala volcano.
- Road to Hana: Drive along this scenic route with stops at waterfalls, rainforests, and beaches.
- Wailea Beach: Relax on the soft sands and enjoy water sports.
- Lahaina: Explore historic buildings, art galleries, and shops in this charming town.
- Molokini Crater: Snorkel or scuba dive in this underwater volcanic crater.
- Iao Valley State Park: Hike through lush rainforest and see the striking Iao Needle.
3. Kauai:
- Waimea Canyon: Hike or drive through the "Grand Canyon of the Pacific."
- Napali Coast: Take a boat tour along this rugged coastline with towering cliffs and waterfalls.
- Hanalei Bay: Swim, kayak, or stand-up paddleboard in this beautiful bay.
- Kilauea Lighthouse: Visit this historic lighthouse and admire the views of the Pacific Ocean.
- Koke'e State Park: Hike through rainforests and see stunning vistas of the island.
4. Hawaii Island (The Big Island):
- Hawaii Volcanoes National Park: Explore active volcanoes, lava fields, and the Kilauea Visitor Center.
- Mauna Kea: Experience stargazing at the summit of Mauna Kea, one of the best places in the world for astronomy.
- Waipio Valley: Hike down to this lush valley with black-sand beaches and towering waterfalls.
- Punalu'u Beach: Relax on this unique black-sand beach.
- Akaka Falls State Park: See the tall and stunning Akaka Falls.
The other islands of Lanai and Molokai offer more secluded and authentic experiences, with limited tourist development and a focus on nature and local culture.