Interfaith worship spaces are buildings that are home to congregations representing two (or more) religions.
Buildings shared by churches of two Christian denominations are common, but there are only a few known places where, for example, a Jewish congregation and a Christian congregation share their home.
Such buildings are of interest as concrete ventures in the interfaith understanding which many religious groups now espouse.
Unitarian Universalist churches hold interfaith services.
Buildings that were planned and erected as joint projects include: Heathrow Airport has multi-faith prayer rooms in all 5 of its terminals.