This publication in English, German, French and Spanish serves as an introduction to "Think Parks." Think Parks are facilities that promote thinking about space, time, and the very large and extremely small numbers used to describe them. The facts presented are simplified and the values describing the facts are rounded off so that an overall picture can be clearly presented and so that the details can be left hidden for further exploration. All the facts and values as well as the pictures are freely taken from Wikipedia, without which I could not have written this book. Without the freely available resources of Wikipedia, the free online encyclopedia, this book could not have been written. As an acknowledgement, gratitude and support to Wikipedia, 50% of all profits from the sale of this book will be turned over to them.