Christian crosses are used widely in churches, on top of church buildings, on bibles, in heraldry, in personal jewelry, on hilltops, and elsewhere as an attestation or other symbol of Christianity.
Crosses are a prominent feature of Christian cemeteries, either carved on gravestones or as sculpted stelae.
Because of this, planting small crosses is sometimes used in countries of Christian culture to mark the site of fatal accidents, or, such as the Zugspitze or Mount Royal, so as to be visible over the entire surrounding area.
Large crucifixes are a prominent feature of some Lutheran churches, e.g. as a rood.
There are code points for other crosses in the block Miscellaneous Symbols and Pictographs (mainly variants of the Greek cross) but their usage may be limited by availability of a computer font that can display them.