Sometimes shipwrecks contain sunken treasure, cargoes of gold or jewelry that tempt bounty hunters to risk treacherous seas in pursuit of lucrative rewards. Other shipwrecks are themselves the treasure — the stories of their ill-fated voyages creating a legend that makes them sparkle far more than any bullion or precious stones.

(SOURCE) https://www.cnn.com/travel/article/story-behind-shackleton-endurance-shipwreck/index.html