1. Santa Monica Pier & Beach
2. Overview: Start your day with a refreshing ocean breeze at Santa Monica Pier, an iconic destination that marks the end of Historic Route 66. The pier offers an amusement park, aquarium, and countless food stalls, all set against a backdrop of pristine sands and endless blue waters. Take a stroll down the boardwalk, play some games, and enjoy the panoramic views from the Ferris wheel. Rating: 4.6/5
3. Duration: About 3 hours

4. Afterwards: Savor a seafood lunch at one of the pier's many restaurants before heading back to the city.

5. Malibu Coastline Drive & Hiking

6. Overview: Experience the dramatic beauty of the California coastline by taking a scenic drive along Malibu's winding roads. Stop at El Matador State Beach for its striking rock formations and secluded coves. For the adventurous, head to Solstice Canyon for a moderate hike rewarded with panoramic vistas and the chance to explore the ruins of a historic mansion. Rating: 4.8/5
7. Duration: Driving 1 hour + Hiking 2 hours

8. Foodie Tip: End the day with sunset dining at Nobu Malibu, known for its sushi and ocean views.

9. Joshua Tree National Park

10. Overview: Venture into the Mojave Desert for a day of otherworldly landscapes at Joshua Tree National Park. This unique ecosystem boasts twisted Joshua trees, massive boulders, and endless skies ideal for stargazing. Hike among the surreal rock formations, visit Keys View for breathtaking panoramas, or simply enjoy a picnic amidst the desert solitude. Rating: 4.7/5
11. Duration: Full day (approx. 6 hours including travel)

12. Travel Tip: Start early to beat the heat and crowds.

13. Catalina Island via Ferry

14. Overview: Escape to the idyllic island of Catalina, just a ferry ride away from Long Beach or San Pedro. Upon arrival, rent a golf cart to explore Avalon’s charming streets, snorkel in crystal-clear waters, or embark on a glass-bottom boat tour to witness marine life up close. The island’s quaint charm and relaxed atmosphere offer a perfect respite from city life. Rating: 4.5/5
15. Duration: Ferry 1 hour each way + Island activities
16. Must-Try: Descanso Beach Club for a refreshing cocktail.

Each of these day trips promises a unique adventure, ensuring your time in and around LA is filled with memorable experiences and breathtaking sights.