wooden indoor play area
A designated indoor space with wooden play equipment, often found in facilities promoting wood education (木育).
See also: 木育
This facility has a wooden indoor play area where children can play with wooden toys.
木育 refers to the broader concept of wood education, while 木育広場 specifically denotes a physical play area designed for that purpose.
Compound of 木育 (もくいく, 'wood education') and 広場 (ひろば, 'open space, plaza').