What's the must-see thing in Aruba?

Arikok National Park covers roughly 34 square kilometres of terrain that feels closer to the Sonoran Desert than anywhere in the Caribbean. Divi-divi trees bend permanently southwest from the trade winds, and the ground underfoot is calcified coral limestone that crunches like gravel. The Cunucu Arikok trail runs about 3 km through tall cacti and scrub to a hilltop where you can see both coasts at once. Entrance costs $11 per adult (about 20 AWG). In that first hour after opening the air still sits near 27°C, but by 10am the exposed rock stores enough solar heat that you feel it through your shoes. There is almost no shade on most trails. Bring at least 2 litres of water per person. The Fontein Cave inside the park holds Arawak drawings that likely date back 1,000 years, and the air inside drops to roughly 24°C. After 45 minutes on the trail, that coolness hits like a reward.

Baby Beach sits on the island's southeast tip near San Nicolas, about 25 minutes by car from the hotel strip along Palm Beach. The lagoon is shallow enough that you can wade 90 metres out and still stand at waist height. Water temperature hovers near 28°C year-round. That calm is genuine. A natural reef barrier blocks the open-ocean current, so the surface stays flat even when the windward coast is choppy. The sand has a gritty texture from crushed coral, coarser than what you'll find on Palm Beach. There is a snack bar on the south end that sells cold Balashi beers for about $4 each. Worth noting, the beach currently has no lifeguard on duty. Past the reef barrier the current picks up fast. Stay inside the lagoon and you'll have the calmest swim on the island.

The California Lighthouse stands at Hudishibana, the island's northwest tip. It was built in 1910 and named after the SS California, a British steamship that sank in nearby waters in 1891. After a restoration the lighthouse reopened for interior tours in 2016, and the climb to the top costs $5. On a clear evening the view north shows nothing but open Atlantic. The wind at the top tends to run 30 to 40 km/h, strong enough to make holding a phone steady a minor project. The surrounding dune scrub smells like salt and dry brush. That said, this is a 20-minute stop, not a half-day outing. Drive up, climb, look around. The real payoff is orientation. From the top you can see Arikok's brown ridgeline to the east, the hotel towers along Palm Beach to the south, and the refinery stacks near San Nicolas. It gives you a mental map of the entire island in one look.

Skip the Butterfly Farm near Palm Beach unless you are with children under 8. It is small, admission is $15, and the enclosed garden traps heat near 35°C with almost total humidity. The sunset pirate-ship cruises advertised in every hotel lobby run about $85 per person for two hours of open bar on a boat. A better use of that $85 is a full-day car rental from a local outfit like Top Drive on L.G. Smith Boulevard, which runs $45 to $65. You'll cover every corner of Aruba in 5 to 6 hours with stops. The island measures 32 km long and 10 km across at its widest point. Roads are well-marked and driving is on the right. One day with a rental car replaces three days of organized tours and roughly $200 in taxi fares between Palm Beach and San Nicolas.