Commonly known as the “Green House,” this century-old colonial mansion in Ayutthaya is one of Thailand’s most feared heritage sites, purportedly haunted by its original owner, Khun Phithak, and his family. Local legend warns of a “Spectral Lady” frequently seen standing on the upper balcony or peering from the windows, leading to modern reports of disembodied screams and sudden, localized temperature drops that cause electronic equipment to fail. The mansion’s reputation is so intense that its doors and windows were once sealed to “contain” the restless spirits, yet locals still report the sound of phantom footsteps and heavy furniture moving within the locked, empty rooms.