One New Hampshire mountain hides a 16-room stone mansion, seven waterfalls, and five summits

New Hampshire’s best-kept estate secret

High in the Ossipee Mountains of Moultonborough, a 16-room stone mansion sits on a mountaintop with Lake Winnipesaukee spreading out below it. Most people drive past without knowing it’s up there.

Castle in the Clouds covers more than 5,000 conserved acres, and the property runs from a trout pond at the base to mountain summits nearly 3,000 feet up.

You can tour the mansion, walk to seven waterfalls, or summit five peaks. Give it a full day.

You’ll use it.

The shoe king who built a mountain retreat

Thomas Plant was born in Bath, Maine in 1859 to French Canadian immigrant parents.

He started on the factory floor and eventually owned one of the largest shoe factories in the world, the Thomas G. Plant Shoe Company in Jamaica Plain, Massachusetts.

He named his mountain estate Lucknow and built it between 1913 and 1914 as a retirement retreat for himself and his second wife, Olive.

The original property ran 6,300 acres and included a stable, six-car garage, golf course, tennis courts, a greenhouse, a man-made lake and a boathouse on Lake Winnipesaukee.

Plant lost his fortune but never left the mountain

Bad timing and bad bets caught up with Plant in the end.

He lost much of his wealth through failed investments in Russian bonds and Cuban sugar, and the 1929 stock market crash took care of the rest. But he and Olive stayed.

They lived at Lucknow until his death in 1941, long after the money was gone. The property changed hands several times after that before opening to the public in 1959.

The Castle Preservation Society took over management in 2006, and in December 2024, the U.S. Department of the Interior designated the estate a National Historic Landmark.

Hand-cut stone, ship craftsmen and Maine white oak

The Boston firm J. Williams Beal and Sons designed the mansion in the Arts and Crafts style, with one goal: the building should look like it grew out of the mountain.

The exterior uses hand-cut local rhyolite and Conway pink granite. Shipyard craftsmen from Bath, Maine carved the interior woodwork from Maine white oak.

Steel beams, poured concrete and terracotta blocks hold it all together underneath.

The Arts and Crafts philosophy running through every room celebrated handmade work over factory production, which is a little ironic given who paid for it.

The mansion ran on technology nobody else had in 1914

Plant did not cut corners on the inside. A central vacuum system ran through the walls so staff could clean without hauling equipment up and down the stairs.

An ammonia-brine refrigeration system kept food cold years before household refrigerators existed. A house-wide interphone system connected every room, an early version of an intercom.

Walk through the self-guided tour today and you can still see these systems, along with a circular needle shower and interlocking kitchen tiles that look like they belong in a much later decade.

Ride the trolley up to a house frozen in time

You get to the mansion by trolley, riding the same winding road the Plants once traveled.

Trolley service starts at 10:15 a.m. and the ride gives you a look at the forested mountainside before the house comes into view. Inside, the rooms are set up as if Thomas and Olive stepped out an hour ago.

Original furnishings are still in place and vintage clothing still hangs in the closets. Museum interpreters are stationed throughout and they know the stories behind the details.

Guided tours of the main floors and basement tours are available separately if you want more depth.

A new 2026 exhibit tells what happened after the Plants left

The estate opened a new exhibit this season called “From Private Estate to Public Treasure: Lucknow after Thomas and Olive Plant.”

It covers the various owners who held the property between Plant’s death in 1941 and the founding of the Castle Preservation Society.

At the base of the property, Shannon Pond gives you a place to slow down and feed the resident trout before heading up.

The Carriage House holds an exhibit gallery with images and artifacts from the estate’s history, and the maintained gardens around the mansion put the mountains and lake right in front of you.

Seven waterfalls in one trail along Shannon Brook

The Brook Walk follows Shannon Brook through the forest and passes seven named waterfalls. Falls of Song drops 40 feet and sits just a short walk from the road.

Bridal Veil Falls fans out across rock in the shape of its name and most people consider it the most striking of the seven. Twin Falls, Roaring Falls, Whittier Falls and Emerald Pool Falls round out the rest.

Interpretive signs at each one include historical photographs showing what the falls looked like when visitors first started coming here more than a century ago.

Five summits, all of them worth the climb

Mount Shaw is the highest point in the Lakes Region at 2,990 feet. From the top, you can see north to the White Mountains and east across the Ossipee ring dike.

Mount Roberts draws hikers who want multiple viewpoints on the way up, with views opening at different points along the trail.

Bald Knob is the one to bring the family, shorter than Shaw but steep, with a panoramic look at Lake Winnipesaukee at the top.

Many of the trails follow the original carriage roads from the Plant era, so the paths are wide and well-maintained.

You’re hiking on the edge of an ancient collapsed volcano

The Ossipee Mountains are what’s left of a volcanic ring dike that formed about 125 million years ago during the Cretaceous Period.

The original volcano collapsed on itself, and millions of years of uplift and erosion shaped the hard igneous rock into the mountains you see today.

The ring dike complex runs about 14 kilometers across and shows up clearly on satellite images.

Geologists have compared the original collapsed caldera to Tanzania’s Ngorongoro Crater, a circular valley enclosed by a uniform wall of rock.

You’re standing on something that old every time you reach a summit.

Free trails, open every day, no matter the season

The conservation area’s roughly 28 miles of trails are maintained by the Lakes Region Conservation Trust and open every day from dawn to dusk, year-round, at no cost.

In winter, people come for snowshoeing and cross-country skiing.

The LRCT conserved this land in 2002 through donations from more than 2,000 people, and it’s the largest property in the Trust’s care.

If you complete all five summits and 16 designated trails, you can earn an embroidered patch through the LRCT’s Hiker Achievement Patch Program.

Trailhead parking is free on Ossipee Park Road and on NH Route 171.

The 2026 season marks 20 years of keeping the estate alive

This season is the 20th anniversary of the Castle Preservation Society’s stewardship, and they’re marking it with more than 200 public programs, including classes, workshops, guided hikes, garden tours and a production of Romeo and Juliet.

The property runs daily from late May through late October, and the trolley starts at 10:15 a.m. You can spend a few hours on the trails, tour the mansion after lunch and still have time to walk the waterfall path before the day ends.

Few places give you this many reasons to stay.

Visit Castle in the Clouds in Moultonborough, New Hampshire

Castle in the Clouds sits at 455 Old Mountain Road in Moultonborough, New Hampshire. The 2026 season runs May 23 through Oct. 25, open daily.

Tickets go on sale at 10 a.m. on-site or you can buy them online in advance. Regular admission covers the Carriage House exhibit, trolley ride and self-guided mansion tour.

Guided and basement tours cost extra. Lunch runs daily at the Carriage House Restaurant from 11:30 a.m. to 3:30 p.m. Hiking trails in the conservation area are free year-round.

Enter through the Historic Entrance for the full scenic approach up the mountain road.

This article was created with AI assistance and human editing.

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