One Dalton Debut; Rock Center Developer; More!

BACK BAY — Boston's tallest new tower since the mid-1970s got officially underway this week: the 699-foot luxury condo-slash-hotel behemoth One Dalton. That's it above, to the right of the Hancock and Pru.

WATERFRONT — The owner of New York's Rockefeller Center and Chrysler Building wants to plant a nine-story condo building on Pier 4.

EAST BOSTON — Are there enough yuppies in the neighborhood to fill this planned 33-unit luxury condo?

BOSTON — And where are all the Boston condo openings this year?