One of the planned Christian Science Plaza towers will be, at 699 feet, the tallest residential building in Boston. Developed by Carpenter & Co. and designed by Henry Cobb (the starchitect behind the Hancock way back when), it will include 211 hotel rooms on the first 20 floors and 180 condos over the rest of the 60 stories.

The 685-foot, 60-story luxury condo building is currently sprouting sprouting from the hole of the former Filene's in Downtown Crossing. Developer Millennium Partners started its sales registration this spring for its 450 units.

After much contention with neighbors over its height and shadows, the city last fall approved the 52-story addition to Copley Place. The 625-footer will include 433 apartments and 109 condos as well as a street-friendly retail base.

As it stands now, the development is to include 812 residences; 1.1 million square feet of office space; 196 hotel rooms; and new restaurants and shops. While developer HYM Investment Group hopes to start construction on the first residential building, a 480-foot, 464-unit tower, by the end of 2014, things could still change.

This under-construction puppy will rise to 415 feet and 38 floors. It will contain 503 studio, 1-, 2-, and 3-BR apartments (that may eventually be converted into condos).

The city approved this approximately 400-foot redevelopment of the Boston Common Hotel and Conference Center in late 2013. It is expected to include 227 hotel rooms and 115 luxury condos. And! It has been designed to be "wind-neutral" to placate some opponents.