Some tourists go for a cheesy picture next to the Pyramid of Skulls at Phnom Penh's Killing Fields. Others opt for a tour of Kigali's genocide war memorials. Or, students of the macabre can join a walking tour following the footsteps of US serial killer Jeffrey Dahmer.
Dark tourism, a lucrative travel industry offshoot catering for a desire to visit sites of mass murder, atrocity and destruction, has now been recognised with an institute devoted to its academic study.
Morgue tours became the fashion in Victorian times, and there are plenty of similar attractions today.
But Dr Philip Stone, co-founder of the Institute for Dark Tourism Research, which launches with a symposium today at the University of Central Lancashire, says there is more to "thanatourism" than a ghoulish desire to gawp at tragedies.
"The institute aims to provide an ethical framework to look at the packaging and commodification of death," he said. "People can dismiss the act of visiting sites of death and disaster as voyeuristic and macabre. But what are the consequences of people visiting these sites?"