In a pair of buildings originally designed by noted architect Carl Fehmer in 1885, this 2,781-square-foot triplex has been meticulously restored during the past 20 years.

If you’re not the type to reside in a cookie-cutter condo, take a look at the ideal antidote to colorless living: an incredible Back Bay townhouse at 357-359 Beacon St., replete with luxurious details and oodles of European-style charm.

In a pair of buildings originally designed by noted architect Carl Fehmer in 1885, this 2,781-square-foot triplex has been meticulously restored during the past 20 years.

One of the homeowners in Unit 2 is a professional interior designer with impeccable taste. She has integrated design elements into this home that you may never see anywhere else.

From the shining brass chandeliers in the pristine lobby to the Provençal style of the enclosed private courtyard, every feature of this unique home is the utmost in refinement and elegance.

Frank Celeste of Gibson Sotheby’s International Realty has the listing and he’s offering the home for $4,599,000.

The building’s soaring entryway is bright with light rushing in through the many-paned windows over the substantial doors. Tall columns and pilasters draw the eye upward to the polished brass light fixtures and a large mirror serves as a focal point.

A long hallway leads to the home. Step inside to admire the formal living room that has magnificent tiger oak paneled wainscoting and a coffered ceiling. The ornately-carved fireplace mantel and oak flooring are original to the home and the three bay windows in front are draped in silk. The registers were made by hand in Liverpool and installed here.

In the gourmet kitchen, every inch of space is well-utilized. Handcrafted custom cabinetry from William Ohs surrounds the impressive La Cornue gas range. A pot filler on the tumbled marble backsplash is convenient and the deep copper sink - accessorized by an Herbeau faucet from France - is a real showstopper. Countertops, made of Jerusalem stone, rock a live edge.

There’s room for a lot of groceries in the pantry. There’s also a Sub-Zero fridge and freeze. A Miele dishwasher helps with cleanup.

An onyx fireplace, original flooring and bright white millwork enhance the sunny dining area. Light dances on the oak floor and through the windows. The view of the Back Bay architecture is splendid. A coat closet in the room accommodates guests.

It’s up the curved, sweeping staircase to the homeowners’ private sanctuary. Hanging atop the stairs is an incredible fixture - a huge lantern light that originally came from Grand Central Station in New York City. It confers tremendous presence in the voluminous space.

The sumptuous master bedroom retains historical details, such as the intricate floral relief work on the fireplace mantle. The fireplace is flanked by two capacious built-ins for clothing storage. Deep dentil crown moldings and moldings on the ceiling give the room extra dimension.

Window seats beneath the bay windows provide seating and additional storage. The upholstered walls look sumptuous and absorb sound. Triple-pane windows ensure silence.

Currently configured as a Parisian study with bookshelves and a library ladder, the south-facing front room would make a very comfortable bedroom. Mirrored closets line one wall and the fireplace has an onyx surround and hearth plus a flat screen TV above it.

The bathroom on this level abounds with luxury, sporting a magnificent sink, steam shower, heated floor and a steam-heated towel rack.

Laundry is a breeze in an LG washer/dryer pair that resides in its own space.

The garden level is all about entertainment and it feels like a separate home within the main domicile. In fact, it once was a separate unit where the current homeowners originally resided.

The staircase running down to the garden level echoes the design of the main staircase, although since it could not be rebuilt as a true curved stairway, the illusion of curved stairs was created by curving the top three and bottom three stairs. It is completely convincing, even as you descend.

The media room is cozy with a large fireplace, a floor imported from Bordeaux, an internal Juliet balcony and decorative painting on the ceiling that makes it resemble stone and brick.

An adjacent wine cellar is hand painted to look like a grotto and it has room for an extensive wine collection – 650 bottles.

A nearby full bathroom sports a soaking tub, a furniture style vanity, a heated towel rack and a vitrine that the homeowner discovered and refinished. There’s a laundry room on this level, too, with a stacked Miele washer and dryer.

Overnight guests stay in an attractive garden room that currently has a queen-size bed concealed within the couch. The room’s fireplace is a charming architectural feature, built as a replica of an inglenook the homeowner saw on the TV show "Dallas" and had to have.

Mullions on the room’s windows line up perfectly with the outside grid so that nothing interferes with the view.

The garden level kitchenette has a Sub-Zero refrigerator with two freezer drawers – ideal for storing snacks and foods that can be cooked outdoors. Meals made on the wood-fired oven/grill are sure to please.

The delightfully-enclosed courtyard looks so European that it will make everyone sitting there forget they’re in Boston, even though the crossbeams are from the USS Constitution. Exceptional touches such as the home’s 20 custom closets, regally curved stairways, decorative paintings and European aesthetic distinguish it from everything else on the market.

For those who appreciate the beauty and quality of the finer things in life, this home is a must-see.