Celebrations are being held across the Melbourne today, to mark the city's 175th anniversary.

European settlers on board the Enterprize first landed on the northern bank of the Yarra River on the 30th of August, 1835.

A flag ceremony was held at the site of the landing this morning.

The Lord Mayor, Robert Doyle, says it is a day to reflect on what makes Melbourne special.

"I think I would be really happy if people stopped for a moment and thought what is it that makes our city great," he said.

"We're one of those rare cities who can actually name the real date. That's when we can actually nominate the moment when white settlers stepped onshore and started construction of some small huts."