Officials Break Ground On 61-Story, $750M Boston Skyscraper

At 61 stories, it's being billed as the tallest building to be constructed in New England since the early 1970s.

Boston Mayor Marty Walsh was among those on hand Wednesday evening for a groundbreaking for the city's newest skyscraper.

The $750 million project at 1 Dalton St., on the Christian Science Plaza, will house a Four Seasons hotel — Boston's second — and some of the city's most expensive condominiums.

Construction is expected to be completed in 2017.

The Back Bay mixed-use proposal was OK'd by the Boston Redevelopment Authority last year.

It was designed by John Hancock Tower architect Harry Cobb, of Pei Cobb Freed, and Gary Johnson of Cambridge 7 Associates, according to a spokeswoman from the PR firm Rasky Baerlein.

The spokeswoman added in a release: "London, Shanghai, Singapore, Los Angeles, Chicago and Istanbul are the only cities that are home to two Four Seasons hotels."