 The practice of embalming did not become popular until after the Civil War and cemeteries often had the stench of decomposing corpses.After several yellow fever epidemics, many cities began to relocate cemeteries outside city limits, as it was believed to be more hygienic.As early as 1711, the architect Sir Christopher Wren advocated for the creation of burial grounds on the outskirts of town, "inclosed with a strong Brick Wall, and having a walk round, and two cross walks, decently planted with Yew-trees".