The Lincoln catafalque.
“A catafalque is a raised bier or platform, often movable, that is used to support the casket, coffin, or body of the deceased during a funeral or memorial service.”
“The catafalque was hastily constructed in 1865 to support the casket of Abraham Lincoln while the president’s body lay in state in the Rotunda. The catafalque has since been used for all those who have lain in state in the Capitol Rotunda…”