The Bow tower officially opens in Calgary

Calgarys newest, tallest icon officially opens Tuesday with a party featuring First Nations drummers and a fireworks show.

The Bow building is thetallest tower west of Toronto in Canadaat 58 storeys, including three sky gardens and a mechanical floor.

It was designed by Foster + Partners, a top architectural firm based in London. Work started on the tower in 2007.

Owned by H&R Real Estate Investment Trust, it is the new headquarters for Cenovus Energy and Encana Corporation.

Earlier this year the $1.4-billionbuilding was named by aGerman firm as one of the worlds most spectacular corporate buildings.

The36-hour concrete pour to lay the foundation for the 236-metre tower at Sixth Avenue between Centre and First streets S.E. set a Canadian record.

A 12-metre tall wire-mesh sculptureof a head by Spanish artist Jaume Plensa sits outside the Bows main entrance.

But aproposed commercial development in downtown Calgarymay surpassThe Bow.

The developer, Brookfield Office Properties, hasapplied for a permit to construct a 56-storey buildingthatwould measure 247 metres.