Douglas Council says it'll offer free parking at a town centre car park to encourage visitors to the capital.
Last year, Douglas City Centre Management carried out a Facebook survey asking people about issues they'd like to see addressed.
The organisation says one such issue was free parking - and Shaw's Brow will now undergo a trial with no charge at weekends.
The scheme will run from 7pm each Friday until 7am on Monday from Friday, April 3 and will be reviewed after Christmas.
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