Chesapeake & Ohio Canal National Historic Park (Washington, D.C.)
The C&O Canal follows the route of the Potomac River for 184.5 miles from Washington, D.C. to Cumberland, MD. The canal operated from 1828-1924 as a transportation route, primarily hauling coal from western Maryland to the port of Georgetown in Washington, D.C. But the REAL reason that I selected this as a Morbid Sightseeing location is the tragic story of the Spong family, three of which were killed during a freak accident near Georgetown. The poignant story is recapped here. I must go here someday to find the ‘W-S-P-O-N-G’ carving myself!

Capital Hauntings (Washington, D.C.)
“No other part of the city claims a more mysterious, macabre history than Lafayette Square, the park north of the White House. The restless ghosts of presidents, a first lady, assassins and military officers roam the hallways of old homes, a church, and even the White House. As the day draws to a close, you’ll creep through the park and adjoining streets past these haunted sites. Your guide will relay the ghost stories associated with each person or place.” (Thanks to Myponine for the suggestion.)

Arlington House / Arlington National Cemetery (Washington, D.C.)
“Arlington House is said to be haunted by the family that built it, but then again it is in a cemetery.” (Thanks to Myponine for the suggestion.)

14th Street Bridge (Washington, D.C.)
THE 2 suggests this site: “Although there’s nothing actually morbid to see here, this site is known as the bridge into which Air Florida Flight 90 crashed shortly after takeoff in January, 1981. Visit the location of the now-famous video clip where a fireman jumped into below-freezing water to save the life of a survivor. Although I haven’t been to this location in years (I left the country in 1991), there were still marks left by the falling airplane remaining on the bridge abutments.”