Alajuela is a city in the Central Valley of Costa Rica. It is the capital of the Alajuela Province and the second-largest city in the country. It is located in the north-central part of the country, about 20 miles northwest of the capital city of San José. The city is known for its rich cultural heritage, its vibrant nightlife, and its proximity to the Arenal Volcano National Park. The city is also home to the Juan Santamaria International Airport, the main international airport in Costa Rica. Alajuela is a popular destination for tourists, with its many attractions, including the Poás Volcano National Park, the La Paz Waterfall Gardens, and the Zoo Ave. The city is also home to a number of universities, including the University of Costa Rica, the National University of Costa Rica, and the Technological Institute of Costa Rica.