National Parks Encyclopedia

Explore 265 articles about U.S. national parks, landscapes, wildlife, geology, conservation, and park history. Thirty articles are free to read, so you can start exploring immediately. READ AND DISCOVER • Search article titles and full text • Follow links between related topics • Explore connections in the map, timeline, and graph • Track progress and earn reading badges • See source links and attribution for articles and images CHOOSE HOW TO UNLOCK Purchase the full encyclopedia once for offline access to every article, or choose Premium for the full encyclopedia plus grounded AI chat. Monthly and annual Premium plans include a seven-day free trial for eligible new subscribers. Restore Purchases recovers prior eligible purchases. Legacy full-version ownership restores encyclopedia and offline access, not AI Premium. The AI assistant is scoped to this encyclopedia and links answers back to source articles. Internet access is required for AI chat and purchases; downloaded encyclopedia content works offline after ownership is verified. Article content is derived from Wikipedia and images are sourced from appropriately licensed Wikimedia Commons and related open sources. Detailed credits and source links are included in the app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/