# Hidden Courts

> Discover public and hidden tennis courts near you. Hidden Courts uses AI on satellite imagery to map tennis courts worldwide — browse the community map for free.

Hidden Courts is a web app that detects tennis courts from satellite imagery using a pre-trained YOLOv8-OBB model, and maintains a free, community-built map of courts worldwide. Browsing the map and directory is free; running a new AI scan of a chosen area is a one-off paid action (no account needed). It is an independent side project, not affiliated with any club or governing body.

## Key pages
- [Live map](https://hiddencourts.com/): interactive satellite map — search a place, browse confirmed courts, or pay to scan a new area.
- [Court directory](https://hiddencourts.com/tennis-courts): every mapped court grouped by city/area (116 courts across 40 areas).
- [Sitemap](https://hiddencourts.com/sitemap.xml): machine-readable list of all pages.

## Court pages
Each court has a page at /court/<id> with its approximate coordinates, a satellite thumbnail, and a Google Maps directions link. City pages live at /tennis-courts/<city-slug>.

## Popular areas
- [Tennis courts in Harrison](https://hiddencourts.com/tennis-courts/harrison) — 23
- [Tennis courts in Los Angeles](https://hiddencourts.com/tennis-courts/los-angeles) — 9
- [Tennis courts in Berkeley](https://hiddencourts.com/tennis-courts/berkeley) — 9
- [Tennis courts in Rye](https://hiddencourts.com/tennis-courts/rye) — 7
- [Tennis courts in Eupilio Como](https://hiddencourts.com/tennis-courts/eupilio-como) — 6
- [Tennis courts in San Francisco](https://hiddencourts.com/tennis-courts/san-francisco) — 5
- [Tennis courts in Lecco Lecco](https://hiddencourts.com/tennis-courts/lecco-lecco) — 5
- [Tennis courts in Galbiate Lecco](https://hiddencourts.com/tennis-courts/galbiate-lecco) — 5
- [Tennis courts in Bellagio Como](https://hiddencourts.com/tennis-courts/bellagio-como) — 5
- [Tennis courts in Portland](https://hiddencourts.com/tennis-courts/portland) — 3
- [Tennis courts in Milano Milan](https://hiddencourts.com/tennis-courts/milano-milan) — 3
- [Tennis courts in Roxbury](https://hiddencourts.com/tennis-courts/roxbury) — 2

## Notes
- Courts are community-contributed and may be public or private; visit at your own risk.
- Locations are approximate, derived from satellite imagery; coverage grows as users scan.