The 415-foot, 503-unit Avalon North Station officially opened on Dec. 12. The milestone marks the completion of one of the tallest new apartment buildings in Boston and one with significant new public space in the North Station area.

The 38-story tower at 1 Nashua Street—its original name was the Nashua Street Residences—includes flourishes such as a 35th-floor lounge with a game room and a terrace; a 24-hour concierge; a 24-hour fitness center; a pet spa; bike storage; and 220 parking spaces. (The lounge is expected to open in February.)

The tower is also Boston’s first residential high-rise with so-called destination-controlled elevators, according to developer AvalonBay Communities. The devices basically shepherd users to their floors faster.

Finally, the development comes with a public arcade providing airy access to North Station and its Green and Orange lines.

As for rents in the brand-new spire, they are not inexpensive, as you might expect. Studios start at $2,335 a month; 1-BRs at $2,805; 2-BRs at $3,475; and 3-BRs at $5,435.

The largest units are 1,704-square-foot 3-BRs and the smallest are studios of 460 square feet. Above is a gallery of a model apartment for potential tenants to peruse.

To check out the slideshow of photos, click here