In the town square sits a sarcophagus, bearing a Greek inscription recording that this was the burial place of Castor, who died in 317 AD.

[4] The Great Famine of Mount Lebanon during World War I precipitated a wave of emigrants from Douma to the Americas and their remittances significantly contributed to boosting the village's economy.

[5] Most infrastructure and houses in Douma were built between 1881 and 1914, largely financed by emigrants from the village in Brazil, Argentina and the United States of America.

[citation needed] In the 1920s, the leaders of Syria who had just rebelled against the French Mandatory rule, were detained and exiled to Douma of Lebanon.

The arming industry established under Ibrahim Pasha's rule encouraged many people from Choueir to come and settle in Douma since opportunities of work were plentiful at the time.