Sunday marks the 100th anniversary of the sinking of the .

The world's largest, most luxurious, and supposedly unsinkable ocean liner was traveling from the British city of Southampton to New York on its maiden voyage a century ago when it hit an iceberg in the North Atlantic. The ship sank in less than three hours. More than 1,500 people died.

Titanic 100th Anniversary Observed

Fascination with the ill-fated ship seems endless. There are exhibits, talks, plays, documentaries, and new books coinciding with the anniversary, as well as a 3-D release of the Academy Award-winning film , starring Leonardo di Caprio and Kate Winslet.

Titanic 100th Anniversary Observed

A memorial cruise left England a week ago to retrace the route. Many of the passengers aboard the are relatives of those who lost their lives in the disaster. A memorial service was held Sunday aboard the at the spot where the went down.

Titanic 100th Anniversary Observed

Richard Davenport-Hines - author of a book titled about the people aboard the ill-fated ship - says the disaster still fascinates people because it evokes contemporary concerns about the dangers of seemingly failure-proof technology. Scientists say the rivets that held together the grandest ship of its time were too weak to withstand the iceberg's impact, so the hull ripped apart like a seam along a tin can.