The Baaiegatstrand is the nudist beach ('unclothed recreation') in recreation area Het Twiske.
Web page is in Dutch only.

Web:
http://www.hettwiske.nl/v_zoeken/print.asp?menu=02500004_000000&n_code=49

Entrance fee:
There is no entrance fee, the entire Het Twiske recreation area is freely accessible day and night.