Nendo

Nendo [瑞個; ねんど] are traditional shrines dedicated to the spirits of the dead. They are often used to mark graves, though can also be found in temples and tombs. Nendo can range from elaborate, intricately-designed shrines to plain carved stone markers. Older types are often more simplistic.
The largest gathering of nendo can be found in Kōsei Temple, where over three hundred have been assembled over centuries. The temple was built as a communal tomb for the spirits of each Emperor after death, with each having an individualised nendo made in commemoration and respect. Each Emperor is thought to represent one facet of humankind; this belief is shown in their shrine through scripture and symbolism.
Along with rulers, it is common for other nobles to be memorialised. The Anzaki Temple is home to over 500 different nendo, each crafted for lesser royalty such as relatives, concubines or close friends of the Emperors.
In modern times, nendo are often used to house the cremated remains of important public figures, such as high-ranking politicians and famous artists. These shrines are generally not for use by the deceased's family or friends. Instead, they are put on public display for the general populace to pay their respects.