Guanacaste is a large region; its numerous attractions are spread out and getting between any two major areas can eat up the better part of a day. The region is diverse enough to justify exploring in its entirety, for which you should budget no less than a week. Monteverde [1] alone requires a minimum of two days, and ideally four, to take advantage of all that it offers. Nor would you wish to rush exploring Rincón de la Vieja National Park [2], requiring two or three nights.
Recent years have seen a boost in regional tourism following expansion of the international airport at Liberia [3], now served with direct flights by most key U.S. carriers. The airport is well served by car rental companies.
The Pan-American Highway (Highway 1) cuts through the heart of lowland Guanacaste, ruler-straight almost all the way between the Nicaraguan border in the north and Puntarenas [4] in the south. Juggernaut trucks frequent the fast-paced and potholed road, which is one lane in either direction. Drive cautiously!
North of Liberia the route is superbly scenic. Almost every sight of importance lies within a short reach of the highway, accessed by dirt side roads. If traveling by bus, sit on the east-facing side for the best views.
Touristy it might be, but Monteverde [1], the big draw, delivers in heaps. Its numerous attractions include canopy tours; horseback riding; art galleries; and orchid, snake, frog, and butterfly exhibits. At Selvatura [5], the one-of-a-kind Jewels of the Rainforest Bio-Art Exhibition is worth the arduous uphill journey to Monteverde in its own right. Most visitors come to hike in the Monteverde Cloud Forest Biological Reserve [6], the most famous of several similar reserves that make up the Arenal-Monteverde Protection Zone.
Back in the lowlands, the town of Cañas [7] offers Las Pumas Rescue Center and the Río Corobicí: the former a refuge for big-cat species; the latter good for relatively calm white-water trips. To the north, few visitors make it to Volcán Miravalles [8], where several recreational facilities take advantage of thermal waters that also feed bubbling mud-pots and geysers. A side trip to Palo Verde National Park [9], with more than a dozen distinct habitats, is recommended for bird-watchers.
Nearby, Liberia [3] is worth a stop for its well-preserved colonial homesteads. The city is gateway to both the Nicoya Peninsula [10] and Rincón de la Vieja National Park [2], popular for hikes to the summit and for horseback rides and canopy tours from nature lodges outside the park.
Santa Rosa National Park [11] is more easily accessed from the Pan-American Highway and is popular for nature trails offering easy viewing of a dizzying array of animals and birds. It also has splendid beaches, great surfing, and La Casona, a historic building considered a national shrine.
Visit Puntarenas [4], the main town, solely to access the ferry to southern Nicoya, or perhaps for a cruise-excursion to Isla Tortuga [12].
The Cámara de Turismo Guanacasteca (tel. 506/2690-9501, www.letsgoguanacaste.com [13]), the Guanacaste Chamber of Tourism, is a good resource.
Links:
[1] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/monteverde-and-santa-elena
[2] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/liberia-and-vicinity/rincon-de-la-vieja-national-park
[3] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/liberia-and-vicinity/liberia
[4] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/the-southern-plains/puntarenas
[5] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/monteverde-and-santa-elena/sights/selvatura
[6] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/monteverde-and-santa-elena/sights/monteverde-cloud-forest-biological-reserv
[7] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/canas-and-vicinity/canas
[8] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/canas-and-vicinity/miravalles-volcano
[9] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/canas-and-vicinity/palo-verde-national-park
[10] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula
[11] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/the-far-north/santa-rosa-national-park
[12] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/southeast-nicoya/isla-tortuga
[13] http://www.letsgoguanacaste.com