In pictures: Easter celebrated around the world from Greece to Iraq

Christians around the world are celebrating Easter.

All Christians, from Orthodox and Western churches, are observing the holiday on the same day this year - not often the case because the churches use different calendars.

In Greece, the sky lit up with fireworks, while worshippers in Jerusalem lit candles at the church where Jesus is said to have been crucified and buried. Christians believe Jesus rose from the dead, which is remembered at Easter.

Here is a look at how some have been celebrating the holiday as days of festivities culminate in Easter Sunday.