Has Israel's capital been the sacred city of three major religions?
Jerusalem certainly has holy sites of the three major
monotheistic religions and adherents of those religions living
within its walls, but depending on how "home" is defined, this may
or may not qualify. The leadership of all Christian Churches and
all Islamic Mosques in Jerusalem are governed by councils operating
outside of Jerusalem, so the homes of those religions can be as far
away as Rome, Addis Ababa, or Mecca. Based on that, only Judaism
has its home and central apparatus in Jerusalem. Other religions
have a presence and wonderful sites, but not a home, even if the
people of those religions have made Jerusalem their home.