"Located in northern Costa Rica, this volcanic park is less crowded than coastal parks and features Rio Celeste, known for its vivid blue color caused by a reaction of volcanic chemicals in the water. The dramatic blue river and surrounding waterfalls make the area feel magical, and nearby lodging options include jungle hotels such as the Hideaway Rio Celeste." - Andrea Romano Andrea Romano Andrea Romano is a writer and editor in New York City. For the last eight years, she has been a lifestyle journalist for Mashable, Brit+Co, Reviewed, Bustle, and Travel + Leisure. Travel + Leisure Editorial Guidelines