An architect built a perfectly circular summer home on an island for his family in 1971. Now, it’s on the market for $1.9 million — check it out.

The circular house on Table Rock Islands as viewed from above. Exit 509 Photography A group of private islands in Ontario’s Georgian Bay is on the market for $1. 9 million.

Collectively known as Table Rock Islands, there are seven islands included in the sale. The largest island comes with an off-grid circular cottage that’s only accessible by boat. Instead of one private island, why not have seven? Ontario’s Table Rock Islands are on the market for 2.

65 million Canadian dollars, or $1. 9 million, and they come with a spaceship-like home. The house is known as Table Rock Cottage and it sits on the biggest island of the seven.

Exit 509 PhotographyThe islands are in Lake Huron’s Georgian Bay. The house, also known as Table Rock Cottage, sits on the biggest island of the collection. Canadian architect William Grierson built Table Rock Cottage in 1971 as a summer retreat for his family, per the listing.

 “The island is accessible only by boat. As children, my brother and I spent entire summers there and family friends would come to stay,” Sarah Waterfield, the current owner and Grierson’s daughter, told Insider. George Webster with Royal LePage Meadowtowne Realty holds the listing.

In addition to the main island with the cottage, there are six smaller, undeveloped islands included in the sale. All seven islands are located near each other in Georgian Bay. Some of them can be seen in the image on the left.

Exit 509 Photography and Google MapsOne of those islands is a one-acre rock island known as “Moby Dick. ” The other five islands range between a half-acre and one acre in size, per the listing. Houses in Georgian Bay have an average house price of CAD $1.

2 million, per data from Canadian real-estate platform Zolo. com. Currently, 12 private islands in Georgian Bay are for sale, with prices ranging from CAD $3.

5 million to CAD $1. 1 million, per real-estate platform Private Islands Inc, which is dedicated to island properties. The Table Rock Islands package is in the mid-price range.

Grierson decided to build his summer home on the biggest island of the cluster due to its level ground and sheltered harbor. The exterior of Table Rock Cottage. Exit 509 PhotographyThe islands were uninhabited when Grierson bought them in 1965, according to an excerpt from a book about Grierson’s career that Waterfield sent to Insider.

Titled “William Grierson: Selected Works,” it was written by Grierson’s wife, Joan, together with writer Alex Champlin. The only sign that anyone else had ever been on the island before Grierson was a brass plaque left behind by the Hydrographic Services of Canada as a record of their visit in 1961, per the book. The interior floors of the 2,800-square-feet Table Rock Cottage are the island’s rock surface.

The house surrounds a large central courtyard with a glass ceiling. Exit 509 PhotographyThe house’s wide, sloping roof is held up by 24 concrete columns placed along the exterior perimeter of the house, per the book. At the core of each column is a metal rod that’s embedded into the ground to ensure that the building can withstand storms.

“Even on rainy days, there is a wonderful sense of ease and we gather by the fire to play board games and drink tea,” Waterfield said. The living, dining, and kitchen areas share an open-concept layout. Large windows and doors provide panoramic views of the surrounding water.

The main living areas have an open-concept layout. Exit 509 PhotographyWaterfield and her brother spent lots of time playing in the waves — fishing, snorkeling, and even sailing. “Back then, summer time seemed endless,” Waterfield said.

“It is a very special place and has its own rhythm, as islands do. “Grierson incorporated the island’s rock into various features of the home. The base of the dining table is also dotted with rocks.

The dining area. Exit 509 PhotographyThe island is remote, but Waterfield said there was plenty to do every summer when they were there. “Far from idle, we were always busy working on the next project — whether it was building a new dock, building a boathouse, or even painting dining chairs,” Waterfield added.

The house is powered by solar panels, making it completely off-grid. The kitchen. Exit 509 PhotographyTable Rock Cottage was powered by an oil generator when it was first constructed.

Grierson installed solar panels in the 1980s, per the book. There are eight bedrooms in the house, and each one has a screened door that leads directly outside. One of the bedrooms in the house.

Exit 509 Photography”The building allows for many people, so everyone has their own space and it never feels crowded,” Waterfield said. There are four bathrooms in the house. The bathroom.

Exit 509 PhotographyFor the water and plumbing system, Grierson had to blast open the rock bed on the island and create a trench where he could place the pipes, per the book. Outside, Grierson built a mechanical dock that could be raised and lowered into the water to protect it from powerful storms. The circular house on Table Rock Islands as viewed from above.

Exit 509 PhotographyWhen the house was built, Grierson had floating docks installed, per the book. However, they were often damaged by strong winds and heavy rain, which caused them to detach and float out into the open water.  After over five decades with the Grierson family, it’s time for Table Rock Islands to find a new owner.

The circular house on Table Rock Islands as viewed from the ocean. Exit 509 Photography”The site is spectacular, with extraordinary sunsets, shooting stars, and August moons. There is no other place like it on earth,” Waterfield said.

Got a home, renovation, or story you think Insider should feature in its real-estate coverage? Email this reporter at agoh@insider. com. Read the original article on Insider.