Christopher Mark, a descendant of steel tycoon Clayton Mark, owns the home.
The castle, known as the Chris Mark Castle, has been on and off the market since 2014.
Mark first put the castle on the market for $45 million in 2014 before cutting its price and eventually removing the listing in 2016. He put it back up for sale in November for $35 million, the listing history shows.
Now, it's gotten a price bump to its highest price on record: $60 million. Mark raised his asking price because he's set his sights on building yet another castle, listing agent John Pizzi of Randall Realtors told The New York Post.
Pizzi did not immediately respond to Insider's request for comment.
"We bought the property in 2001, and then started building in 2003. It was mostly complete by 2010," Mark told Insider.
Mark currently lives in the castle with her sister and her father.
The castle has nine bedrooms, seven full bathrooms, and 12 fireplaces. The entire lot spans over 400 acres and includes a 30-acre pond, the listing shows.
"Our ancestors have castles in Ireland, so we wanted to keep the idea going in our generation now too," she added.
"They were handcrafted in my dad's factory in Putnam. And that's where he made all of the parts for the castle, in his metal and wood shop," Mark said.
"All the trimmings in the house are either my sister's or my profile," she said.
"When we were younger, we had to open our mouth really wide, so someone could carve our face into clay," she said.
When it rains, water pours out from the mouths of these carvings, Mark added.
"But since my dad spent so much time building this for our family, I wanted to possibly make it a business in the future. So I wanted to help him out and that's why I took the year off to help him promote the castle, and get it some exposure," she added.
Mark now runs a TikTok account dedicated to giving an inside look at the castle's design and features. The account has 342,000 followers.
A quick look at the photo gallery on the castle's website shows that it has been used as a set for a car photoshoot as well as a music video.
"There's a bunch of features that I love, but probably the most shocking is the glass dome at the top," she said.
"Because when you're up there, it's all glass and you can see three floors down because there's glass in the three floors below it, too," she added.
"It's because my sister is in college and I'll be going to college next year. We're moving out, and he doesn't want to just be there by himself if we're not using it," she added.
As the castle looks for its next owners, there's a particular profile of buyers that might fit best.
"This property is an optimal fit for a person who wants a lifestyle change: not an ordinary run-of-the-mill home or estate, something unique and exceptional," Pizzi, the listing agent, told CT Insider.
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