Jeju Seongji is an open-air historical fortress ruin suitable for families, though stroller and child amenity details are not documented.

• Open year-round with no admission fee or reservation required
• Outdoor historical site featuring reconstructed fortress walls and ruins
• Located in central Jeju city near Ohyeon-gil
• No documented information on stroller access, restrooms, or child facilities
• Best suited for walking-age children interested in history
• Korean-language signage only; English translations not confirmed

Based on operating.open_hours_raw ('상시 개방'), place_type (attraction), and region context. Stroller access, child_friendly_level, accessibility features (stroller_access, lactation_room, highchair_available), and infant_family_notes are all null/undocumented. Language support limited to Korean. Answer reflects only documented facts; families should verify on-site amenities before visiting.

Jeju Seongji operates in Korean only; no multilingual signage, menus, or guides are confirmed available.

• No multilingual signage or translated menus confirmed
• Korean-language operation only
• No audio, video, sign-language, or large-print guides documented
• Historical fortress ruins site with minimal visitor infrastructure noted
• English-speaking staff availability not confirmed
• Recommend bringing a translation app or guide if you do not speak Korean

Based on language_support fields showing korean=true but all other language fields and guide options (audio_guide, sign_language_guide, video_guide, large_print_guide) as null. No localized canonical names available. Trust is limited by absence of confirmed multilingual services; absence of data does not guarantee total unavailability, but should be verified on-site or by contacting the site directly.