Refers to the location where someone dies or intends to die. Often used in contexts of choosing a final resting place or describing where a death occurred.
He chose his hometown as the place to die.
その事故の死に場所は特定されていない。
The place of death in that accident has not been identified.
Compound of 死に (continuative form of 死ぬ 'to die') + 場所 'place'.