Muslims around the world are celebrating Eid al-Fitr, one of the biggest celebrations in the Islamic calendar. Eid al-Fitr - which means "festival of the breaking of the fast" - is celebrated at the end of Ramadan, a month of fasting for many adults, as well as spiritual reflection and prayer.

Muslims typically mark the holiday with family visits and outings, and children get new clothes. Families also visit the graves of loved ones, and the suffering of Muslims in the Gaza Strip and other conflict zones was never far from people's minds.

Eid al-Fitr is the festival that marks the end of Ramadan, but what is it, and how is it celebrated? Here's what people should know about the Islamic festival that closes out a holy month of fasting and religious study.