Bonacaud Bungalow (Bungalow No. 258)
Bonacaud Bungalow (officially Bungalow No. 258) sits atop a misty, isolated hill within the Bonacaud Tea Estate in the Agasthyarkoodam forest range near Trivandrum, Kerala. Built in 1951 by a wealthy British tea planter, the sprawling mansion was abandoned overnight after the planter's young daughter was killed under mysterious circumstances. Surrounded by dense jungle, decaying timber, and lingering mountain fog, the ruin is widely considered Kerala's most terrifying haunted location.