Land records for the House of the Week at 66 Seldon Road in Lyme, date back to the 1600s. It was part of a 3,000-acre parcel that spanned both sides of the Connecticut River. Over time, the land was subdivided and part of it became a state park. A cattle road was put in during the 1850s, and a section of that road is now the driveway into this one-of-a-kind coastal compound.

"You have your own private peninsula with this property," according to Michele Ferguson Nichols, a Realtor with the Fieldstone Group at Douglas Elliman Connecticut and the co-listing agent for The Point.

A long, gated drive leads to the main house, a six-bedroom custom-built coastal contemporary.

Since its debut in 1990, this home has seen two iterations. It was renovated and expanded by the current owners in 2012. The original house was built with concrete and steel beams, at 3-feet higher than the 100-year flood plain.

The peninsula has water on two sides — in one direction, the Connecticut River; in the other, an inlet leading out to Long Island Sound. The setting serves up spectacular water views from many of the interior rooms.

The interiors afford a vast 15,233 square feet of living space, with décor that Ferguson Nichols described as "very comfortable luxury."

"It's welcoming, and the color palette is neutral," she said. Much of the flooring is quarter sawn white oak. The built-ins and beams are crafted in cherry, and mahogany was chosen for the doors and trim.

The rooms are all generously proportioned, with high ceilings and lots of windows to welcome in natural light.

There are two kitchens — the main eat-in kitchen, with a fireplace, butler's pantry, warm antiqued cherry cabinets and leathered green granite surfaces. The secondary kitchen is positioned just off the terrace; it comes in handy for catered events or entertaining outside. "They have gorgeous sunsets from that vantage point," Ferguson Nichols said.

With a total of 29 rooms, there are several options for home offices. "On the main floor, you have the library. That has beautiful built-ins and a secret hideaway bathroom, hidden behind a wall," she said.

The primary bedroom suite is on the main level, as well. It's not hard to imagine it being a sanctuary at the end of a long day. It has its own spa room with a pedicure chair, a heated 6-by-12-foot spa pool and a gas fireplace. Among the house's other extra-special features: a fascinating 10-foot, 500-gallon tropical fish aquarium in the sunroom.

The expansive terrace that runs the width of the back of the house is a feng shui design, with a fire pit at one end and a waterfall at the other. Part of it embraces the pool, with plenty of space for dining and lounge furnishings.

The Point is a high-tech and sustainable property. The lighting, climate, irrigation, security and audio-visual systems are all automated. It's equipped with efficient geothermal climate control, and a whole-house water filtration system. All the mechanicals are housed in the eternally charming 1700s-era post-and-beam barn that was reclaimed from a site in a Vermont and moved to its new home here — on a new foundation with radiant-heat flooring. A second outbuilding is the carriage house, which has been turned into a three-bay garage with a self-sustaining one-bedroom apartment on its second level.

The owners belabored to protect the property's wetlands and to remove any exotic and invasive species of plants and trees, allowing a forest of native sycamore trees to flourish. "You can take a stroll here, take a nature walk and roam the property in complete privacy," the Douglas Elliman Realtor said.

To take full advantage of the waterfront setting, there's both a stretch of beach and a 100-foot dock. Priced and positioned for luxury-market buyers who enjoy sailing and all manners of watersports, this property has the added appeal of proximity to New York City, Hartford, Providence and Boston.