Rameswaram
Located at the tip of the island, 12 kilometres from the main town, Kothandaramaswamy Temple is the only structure in Dhanushkodi that survived the 1964 cyclone — a fact that locals consider miraculous. The ancient temple sits literally at the edge of the sea, with waves sometimes washing over the courtyard during high tide, and the legend that this is the spot where Vibhishana (Ravana's brother) surrendered to Rama gives it a particular mythological weight.
Combine this with the Dhanushkodi ghost town visit — they are on the same road. The temple is most atmospheric at sunset when the sea turns gold around its walls.