游乐园 (yóu lè yuán) means “amusement park”

More examples

这个游乐园有很多好玩的项目。zhè ge yóu lè yuán yǒu hěn duō hǎo wán de xiàng mù

There are many fun attractions at this amusement park.

An enclosed leisure world filled with attractions for active play and entertainment.

游乐场yóu lè chǎng: A play space with equipment and activities for children or adults.

为人们提供玩乐活动并配有多种游乐设施的场所。wéi rén men tí gōng wán lè huó dòng bìng pèi yǒu duō zhǒng yóu lè shè shī de cháng suǒ

游 (yóu, "play or roam") + 乐 (lè, "fun") + 园 (yuán, "garden or enclosed grounds") describes enclosed grounds devoted to enjoyable play.

游乐园 (yóulèyuán, "amusement park") is a useful broader label than "theme park," because it can describe a park focused on rides and games without naming a special theme.