$12,950,000
The 7,500-square-foot Greek Revival has three bedrooms and nine bathrooms (six full). It is former commercial space for the Unitarian Universalist Association, which sold it and its neighbor at No. 7 in March 2014. Six Mount Vernon is asking $12,950,000 with a commitment from the developer to complete all exterior work. Small caveat: The townhouse is available as a shell for just $8,500,000.

$12,750,000
The 6,270-square-foot spread, currently being carved from a former Suffolk University building, comes with six bedrooms and an astounding seven full bathrooms (and two halves). Small caveat here, too: Units 6A and 6B are being offered separately, too.

$11,500,000
The 4,044-square-foot 3-BR, 3.5-BA spread with direct elevator access, a wine cellar, parking for two, and (of course) bike storage dropped in late March for a cool $11,500,000.

$9,850,000
This 4,132-square-foot condo also has four bedrooms and four and a half bathrooms, but is on a lower floor.

$9,600,000
The eight-room, 6,550-square-foot former carriage house (with a six-car motor court) was once asking as much as $10,500,000.

$9,250,000
The 4-BR, 4.5-BA penthouse spreading to 3,618 square feet comes with a 455-square-foot terrace.

$8,950,000
And, finally, Millennium Tower makes an appearance! The under-construction spire will be Boston's tallest residential building when it's finished later this year. This 3,345-square-foot, penthouse comes with three bedrooms and four and a half bathrooms.

$8,799,000
This seven-room, 4,407-square-foot condo just hit the sales market. The duplex includes a private garden and two parking spaces.