9 Best Sights in Waikiki and Diamond Head, Honolulu and Pearl Harbor

Panoramas from this 760-foot extinct volcanic peak, which was once used as a military fortification, extend from Waikiki and Honolulu in one direction and out to Koko Head in the other, with surfers and windsurfers scattered like confetti on the cresting waves below. The 360-degree perspective is a great orientation for first-time visitors. On a clear day, look east past Koko Head to glimpse the outlines of the islands of Maui and Molokai.

Reservations to enter this popular park are required in advance for those who are not Hawaii residents, and an entrance and parking fee must be paid via credit card. You can reserve up to 30 days in advance; the last reservation is 4 pm. From Waikiki, take Kalakaua Avenue east, turn left at Monsarrat Avenue, head a mile up the hill, and look for a sign on the right. Drive through the tunnel to the inside of the crater. The ¾-mile trail to the top begins at the parking lot, and the hike up to the crater is steep, with numerous stairs to climb. So if you aren't in the habit of getting occasional exercise, this might not be for you. At the top, you have a somewhat awkward scramble through a dark tunnel and bunker out into the open air, but the view is worth it.

As you walk, note the color of the vegetation: if the mountain is brown, Honolulu has been without significant rain for a while, but if the trees and undergrowth glow green, you'll know it's the wet season (winter) without looking at a calendar. Winter is when rare Hawaiian marsh plants revive on the floor of the crater. Wear closed-toe shoes or sneakers, a hat, and take bottled water with you to stay hydrated under the tropical sun. There are no water stations (or any shade) along the hike. Keep an eye on your watch if you're here at day's end: the gates close promptly at 6 pm.  To beat the heat and the crowds, rise early and make the hike before 8 am.

A wide, soft, ultra-white shore with gently lapping waves makes this fine beach a family favorite for running-jumping-frolicking fun. Other bonuses include the shaded, grassy grilling area, pickleball courts, and many aquatic rental options. The beach fronts the Hale Koa Hotel as well as Fort DeRussy. Amenities: food and drink; lifeguards; showers; toilets; water sports. Best for: swimming; walking.

Named for Duke Kahanamoku, Hawaii's famous Olympic swimming champion and waterman, this hard-packed beach fronting the Hilton Hawaiian Village Waikiki Beach Resort is great for families. It's the only stretch of Waikiki with shade trees on the sand, and its waters are very calm thanks to a rock wall that creates a semiprotected cove. The ocean clarity here is not as good as elsewhere, but this is a small price to pay for peace of mind about youngsters. Amenities: food and drink; parking (fee); showers; toilets. Best for: sunset; swimming; walking.

The world definitely has bigger and newer zoos, but this 42-acre facility features well-paved, walkable trails amid a lush garden with tropical flowers. To get a glimpse of the endangered nene, the Hawaii state bird, check out the zoo's Kipuka Nene Sanctuary. Other highlights include a Japanese Giant Salamander habitat and an ectotherm complex, which houses a Burmese python, elongated tortoises, and a giant African snail. Though many animals prefer to remain invisible—particularly the big cats—the monkeys and elephants appear to enjoy being seen and are a hoot to watch. It's best to get to the zoo when it opens because the animals are livelier in the cool of the morning. Children adore the petting zoo, where they can make friends with a llama or stand in the middle of a koi pond.

There's an exceptionally good gift shop. On weekends, the Art on the Zoo Fence, on Monsarrat Avenue on the Diamond Head side outside the zoo, has affordable artwork by local contemporary artists. Metered parking is available along the makai (ocean) side of the park and in the lot next to the zoo. Parking is free at the lot across the street (at the Waikiki Shell), but it can fill up early. TheBus makes stops here along the way to and from Ala Moana Center and Sea Life Park (Routes 8 and 22).

Across from the zoo, at the eastern end of Waikiki along what is known as the Gold Coast, this small rectangle of sand is a local-favorite sunning spot for beach lovers of all ages. Although it's usually quieter than the stretches of beach in the heart of town, it's also close to the conveniences of Waikiki. Children can splash safely in its shallow waters, which are protected (for now) by the walls of the historic natatorium, a long-closed, Olympic-size, saltwater swimming arena. Serious swimmers and triathletes also train in the channel beyond the reef here. The Kaimana Beach Hotel and popular Hau Tree lanai restaurant are next door. Amenities: lifeguards; parking (fee); showers; toilets. Best for: swimming; walking.

The Victorian-style bandstand, built in the late 1890s, is Kapiolani Park's stage for community entertainment and concerts. Founded by King Kamehameha III in 1836, the Royal Hawaiian Band is the nation's only city-sponsored band and performs free concerts at the bandstand as well as at Iolani Palace and the center stage at Ala Moana Center. Visit the band's website for concert dates ( www.rhb-music.com), and check event-listing websites and the Honolulu Star-Advertiser—Oahu's local newspaper—for information on other coming bandstand attractions.

Featuring a bronze statue of Duke Kahanamoku, the father of modern-day surfing, this lively beach is bordered by a landscaped walkway with a few benches and some shade. It's great for strolls and people-watching any time of day. Check out the Kuhio Beach hula mound Tuesday, Thursday, and Saturday at 6:30 (at 6, November–January) for free hula and Hawaiian-music performances and a sunset torch-lighting ceremony. Surf lessons for beginners are available from the beach center every half hour. Amenities: food and drink; lifeguards; showers; toilets; water sports. Best for: surfing; walking.

Once the site of Queen Liliuokalani's beach house, this strand near the Honolulu Zoo draws locals and tourists of all ages. Lovely banyan trees offer shade, the bronze Surfer on a Wave sculpture by artist Robert Pashby honors surfing, volleyball nets welcome pros and amateurs alike, and waters that are part of an aquatic reserve provide superb snorkeling opportunities. The beach is also near what is considered the area's premier bodyboarding spot: the break called The Wall. Be sure to walk out to the gazebo (where experienced boarders jump into the ocean) for stellar views of Waikiki and beyond. Amenities: lifeguards; showers; toilets. Best for: snorkeling; swimming; walking.

This small yet fun attraction harbors more than 3,500 organisms and 500 species of Hawaiian and South Pacific marine life, including an endangered Hawaiian monk seal and a zebra shark. The Living Reef exhibit showcases diverse corals and fascinating reef environments found along Hawaii's shorelines. Check out exhibits on the Northwestern Hawaiian Islands (explaining the formation of the island chain) and Ocean Drifters (about various types of jellyfish). A 60-foot exhibit houses sea horses, sea dragons, and pipefish. A free, self-guided mobile audio tour is available via your own smartphone. The aquarium offers activities of interest to adults and children alike, with a focus on the importance of being eco-friendly and keeping our oceans clean.