On a clear, frigid night in a courtyard made of walls of ice, Bruce McCafferty and his young son stand mesmerized, bathed in the pulsating rainbow light emanating from a series of stout ice formations.

McCafferty and his son Dougie have come out to Ice Castles in North Woodstock, New Hampshire, a collection of ice tunnels, caverns and a 97-foot (30-meter) ice slide that cover an acre (half a hectare) of farmland that some have said are like something out of the movie “Frozen.”

The winter wonderland, one of six in North America, is built from scratch when the cold conditions allow the ice to sprout from the barren ground.

In this Friday, Jan. 25, 2019 photo, visitors race down the side-by-side tunnels of a 97-foot ice slide at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Friday, Jan. 25, 2019 photo, visitors race down the side-by-side tunnels of a 97-foot ice slide at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)

Other parks are located in Lake Geneva, Wisconsin; Excelsior, Minnesota; Dillon, Colorado; Midway, Utah; and Edmonton, Alberta. This year, the attractions will stand until early March in most locations.

At the center of the New Hampshire attraction stand six ice structures that are nearly four feet tall (more than a meter tall) and are lit from within by colored lights.

“It’s quite magical isn’t it?” McCafferty said. “It’s an amazing creation. I’d really like to know how they actually built it.”

In this Monday, Jan. 28, 2019 photo, a sprinkler sprays a fine mist over a metal rack to grow icicles at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Monday, Jan. 28, 2019 photo, a sprinkler sprays a fine mist over a metal rack to grow icicles at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)

The attraction starts small in December, when the site’s lead builder Matt Pasciuto and his team set up icicle farms: metal racks that are sprayed with water to allow icicles to grow on them overnight. The icicles are then harvested by “ice artists,” who place them around more than 70 sprinklers.

“Once we turn the sprinklers on, the water starts freezing to those icicles, making them grow together, bigger and bigger and thicker and thicker,” Pasciuto said. “We grow the castle about two to three feet (a half-meter to one meter) at a time.”

Within a few weeks, the icicles have managed to cover the entire park, and some reach heights of 20 feet (six meters).

In this Monday, Jan. 28, 2019 photo, icicles are harvested for use in growing the walls at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Monday, Jan. 28, 2019 photo, icicles are harvested for use in growing the walls at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)

On a recent sunny day, the massive ice walls shined with a glacial blue hue. After the sun went down, the castles seemed to burst with colors thanks to LED lights embedded in the ice. The astonishing visuals are complemented by a synchronized fantasy soundtrack playing throughout the venue.

The attraction, which moved to this year from neighboring Lincoln, draws tens of thousands of visitors each season.

“When the movie ‘Frozen’ came out, that was a huge boost because now everyone says, ‘Oh, we get to see an actual ice castle,'” Pasciuto said.

In this Monday, Jan. 28, 2019 photo, Matt Pasciuto places an icicle at the top of a wall at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Monday, Jan. 28, 2019 photo, Matt Pasciuto places an icicle at the top of a wall at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)

Three years ago, Adam Schellinger started bringing his girlfriend on annual dates to the Ice Castles in New Hampshire, a three-hour drive from their hometown of Brooklyn, Connecticut. On last year’s visit, Schellinger got down on one knee and popped the question. The crowd immediately began cheering. The couple was married in September.

“When I proposed, it was blue, and then it went to purple,” recalled Schellinger, who returned for a visit with his wife Ashley a couple weeks ago. “It was just awesome — a great backdrop for sure.”

After a mild start to the winter, the weather in New Hampshire this year has mostly cooperated with only a few days with above-freezing temperatures. But that isn’t always the case, according to Melissa Smuzynski, public relations director for Ice Castles. She said some locations occasionally have had to cut their seasons short due to warmer winters but that “we haven’t noticed a long-term pattern over the years of our seasons becoming shorter.”

In this Saturday, Jan. 26, 2019 photo, visitors pose for a photo in a tunnel at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Saturday, Jan. 26, 2019 photo, visitors pose for a photo in a tunnel at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)

But Pascuito says he dreads the warmer days.

“The last couple of years we’ve had some really bad warm spells in February where it gets to 60 degrees (Fahrenheit, 15 degrees Celsius). This is New Hampshire — that shouldn’t happen,” he said. “We love the cold. We want a nice long winter.”

In this Saturday, Jan. 26, 2019 photo, a man zooms down a 97-foot ice slide at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Saturday, Jan. 26, 2019 photo, a man zooms down a 97-foot ice slide at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Saturday, Jan. 26, 2019 photo, Bruce McCafferty and his son, Dougie, pause while exploring the ice formations growing at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Saturday, Jan. 26, 2019 photo, Bruce McCafferty and his son, Dougie, pause while exploring the ice formations growing at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)
In this Friday, Jan. 25, 2019 photo, fire dancers perform at Ice Castles in North Woodstock, N.H. The winter wonderland is one of six in North America. (AP Photo/Robert F. Bukaty)
In this Friday, Jan. 25, 2019 photo, fire dancers perform at Ice Castles in North Woodstock, N.H. The winter wonderland is one of six in North America. (AP Photo/Robert F. Bukaty)
In this Friday, Jan. 25, 2019 photo, a couple enjoy the Ice Castles in North Woodstock, N.H.
In this Friday, Jan. 25, 2019 photo, a couple enjoy the Ice Castles in North Woodstock, N.H. “It’s a really popular date night spot,” said castle builder Matt Pasciuto. (AP Photo/Robert F. Bukaty)
In this Saturday, Jan. 26, 2019 photo, a couple heads towards an entrance to a cavern at Ice Castles in North Woodstock, N. (AP Photo/Robert F. Bukaty)

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