7 Best Sights in Arenal, Monteverde, and the Northern Lowlands, Costa Rica

If your time in Monteverde is limited, consider spending it at Selvatura, a kind of nature-themed adventure park—complete with a canopy tour and hanging bridges—just outside the Santa Elena Reserve. A 100-bird hummingbird garden, an enclosed 20-species mariposario (butterfly garden), a sloth sanctuary, a herpetario (frog and reptile house), and insect exhibition sit near the visitor center. The only zipline tour built entirely inside the Monteverde Cloud Forest has 12 lines and 18 platforms, with an optional Tarzan swing at the end to round out the excursion. The Tree Top Walkway takes you to heights ranging from 36 feet up to 180 feet on a 3-km (2-mile) walk. These are some of the longest and strongest bridges in the country and run through the same canopy terrain as the zipline tour, which sometimes makes for a not-so-quiet walk.

You can choose from numerous mix-and-match packages, depending on which activities interest you, or take it all in, with lunch included, for $169. Most visitors get by for much less, given that one day isn't enough for all there is to do here.

Thirty species of butterflies flit about in four enclosed botanical gardens, and you'll learn about a variety of other insects and arachnids. Morning visits are best, since the butterflies are most active early in the day. Your entrance ticket includes an hour-long guided tour under tin roofs, meaning you won't get wet on rainy days. Be sure to visit the nonprofit gift shop benefiting the local community.

The 54,000-acre rain forest dwarfs the Monteverde and Santa Elena reserves. It began life as a school project in Sweden among children interested in saving a piece of the rain forest, and blossomed into a fund-raising effort among students from 44 countries. The reserve's Bajo del Tigre trail makes for a gentle self-guided 3½-km (2-mile) hike through secondary forest. Along the trail are 27 stations at which to stop and learn about the reserve, many with lessons geared toward kids. A separate guided twilight walk with a knowledgable guide ($25) begins at 5:30 pm and lasts two hours, affording the chance to see the nocturnal side of the cloud forest; reservations are required. Much of the rest of the reserve is not open to the public, but the Monteverde Conservation League offers stays at San Gerardo and Poco Sol, two remote field stations within the forest. The $79 packages include dormitory accommodation and meals.

A small ecotourism project outside town exhibits 60 species of medicinal plants, abundant animal life—including sloths and caimans—and butterfly and orchid gardens. This is a great place to see Costa Rica's famed red poison dart frogs up close. You can also learn about the indigenous Maleku culture and see their art displayed. Seven guided tours are offered daily from 8 am to 3:30 pm. A two-hour guided evening tour begins at 5:45 and should be reserved in advance. The center can arrange your transportation, too.

If you or your kids love creepy, crawly, slithery things, head here. Operated by Sky Adventures, this herpetarium holds more than 50 species of reptiles and amphibians, such as native frogs, toads, turtles, lizards, and snakes in terrariums. Some of the more impressive species are the colorful poison arrow frog, the Jesus Christ lizard, snapping turtles, tarantulas, and the red-eyed tree frog. Animals are most active around 6 pm. Admission includes guided tours in English or Spanish.

Butterflies, frogs, and snakes have their own Monteverde-area exhibits, and bats get equal time with guided tours that provide insight into the life of one of the planet's most misunderstood mammals. If you've had an aversion to bats in the past, be prepared to start loving them. Admission includes a 45-minute guided tour through a small exhibit and glass enclosure housing nearly 100 live bats. You can watch them fly, eat, and even give birth. Reservations are recommended.