Question: how much does it cost to build a small amusement park?
Answer: Small waterparks can cost less than $1 million to build, but parks of this size are considered more as water playgrounds. Generally, waterparks, as we have come to know (and expect of) them, cost between $10 million and $40 million to build. Indoor theme parks require, on average, $10 million to $30 million to build.