It’s not biggest or brightest thing to see in Barcelona, but during your visit to the Born Quarter you will see it anyway, due is the starts of the Paseo del Born.

The place’s name has an interesting history:
The origins of the Foso de las Moreres date from the XII century, when the priest of the Santa Maria del Mar Church, in need of a place near his parish to bury his faithful, asked the potentate Bernat Marcús (yes! the same of the Marcús Chapel to donate his adjacent land to the church. Marcus, gave him the lot, but on the condition that within a maximum period of fifteen days a parishioner should have been buried in his lot, since if that period the land had not been used, it was not as necessary as the priest intended.
After the deadline granted by Marcús without any death, he went to the church to cancel the donation. When he arrived under the mulberry trees that adorned the square, a sudden heart attack ended his life, the donor being the one who inaugurated the cemetery.