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.
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."
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).
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.
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