The culture of the indigenous people of Costa Rica only forms about 1.7% of the population. However indigenous art and craft are available everywhere. They range from ceramic, to ornaments and jewelry. One of the historic artifacts are the stone spheres found near Palmar Norte and Palmar Sur in Corcovado.
In 1920, Oregon's Opal Whiteley was the center of international controversy. Her childhood diary was called a work of genius, until readers discovered hidden clues to a mystery that has not been solved to this day.Opal claimed to have written the diary mostly with crayon, on scraps of paper, using phonetic spellings and no punctuation. She also said that her sister later tore up the pages of the diary. She said she kept all the pieces stored in boxes.