It’s one thing to have a house full of rare, gorgeous and expensive art. But for some New York collectors, that’s not enough — they’ve expanded to their yards.

Made to withstand the state’s bitter winters and warping summer heat, these large-scale sculptures are often museum quality. And unlike a bird bath or a gazebo, they can cost up to hundreds of thousands of dollars.

While some collectors are all about the investment (billionaire businesssman Peter Brant reportedly keeps a 40-foot-tall puppy topiary by Jeff Koons on his Connecticut property), others commission pieces with a personal connection.

Philanthropist Suzanne Weiss has three works behind her East Hampton home, including a life-sized rendering of her now-28-year-old daughter, Nathalie, jumping rope as a 5-year-old. “Looking out your window and seeing something with meaning is a beautiful thing,” she told The Post.

Meet the locals who wear their hearts on their lawns.

The nudist tribute

“Sir” Ivan Wilzig is notorious for the outrageous, sexually-fueled bacchanals he throws at his 15,000-square-foot Water Mill, LI, castle. So of course the 62-year-old has adorned his swimming pool with a sculpture in the form of a nude woman.

More specifically, the form of his ex-girlfriend Mina Otsuka. But it’s actually a replacement. Previously, the space was occupied by a sculpture of the now ex-wife of his brother and onetime roommate, Alan. When the sibling moved out, he took it with him.

“For two years, I had a gigantic flowerpot in the place where the sculpture had been,” said Ivan. “Then I decided that I wanted to keep with the medieval theme of the castle. I asked Mina to model as an all-nude woman transforming into a dragon. It’s life-sized, made of polyurethane, and called DragonMina.” (Although he and ­Otsuka are no longer together romantically, Wilzig said she is his “best friend.”)

He commissioned local sculptor Roby Braun to do the job at a cost of $18,000. “He worked on it until Mina thought it looked like her and radiated her energy” — a process that took two years to complete. “I don’t think [Braun] minded,” said Ivan. “I presume he loved seeing Mina naked. That’s another reason why it may have taken two years to complete.”

The good-luck charm

Susan Meisel, 70, pretty much has her own sculpture park alongside the Sagaponack, LI, property where she lives with her art-dealer husband, Louis. There are 30 sculptures scattered across four acres, including this undulating canopy by Hans Van de Bovenkamp.

Though the piece, valued at $385,000, is striking, it has also served a practical purpose. “My son, Ari, and his wife, Anna, along with their wedding party, walked under it on their way to the chuppah,” said ­Susan, recalling the wedding that took place 12 years ago.

Rising 10 feet high and, according to Louis, “wide enough for a car to drive through,” the work requires nothing in the way of upkeep since it’s made of nautical stainless steel. It also possesses a secondary layer of emotional resonance. “I have a ­superstitious side to me; I keep horseshoes around the house,” said ­Susan, an artist. “This piece reminds me of [one].”

The anniversary gift

Stephen Weiss knew how to make an impression. In 2008, to mark 25 years of marriage to wife Suzanne, he bought a 12-foot-tall sculpture called “Valentine” from artist Carole Eisner.

When Stephen died that same year, his final gift took on even more meaning. The art first stood outside the couple’s Greenwich, Conn., home. But in 2016, when Suzanne moved to East Hampton, “Valentine,” which weighs half a ton, had to come, too. It now has pride of place on her front lawn.

“From anywhere in the front of the house, I can look out and see the sculpture’s heart shape,” said Suzanne, now in her 60s. “It reminds me of Stephen because it symbolizes love that will last forever.”

The $150,000 piece also reflects the passage of time, thanks to the Hamptons’ salt air. “You want it to rust; that is the beauty of using steel,” Suzanne said. “[‘Valentine’] will take whatever the environment gives it.”

The friendship reminder

Whom you know can be as important as what you know. Alan Patricof, founder of venture capital firm Greycroft Partners, lucked out by knowing art-world heavies Henry Geldzahler and Arnold Glimcher.

If not for them, he would not have a sculpture called Upbox, in the apple orchard behind his East Hampton home. Standing over

11 feet tall, the work by abstract expressionist Mark di Suvero had been owned by Geldzahler.

“I knew Henry; we went to Horace Mann together,” said Patricof, 83, of the late art critic and curator. “Plus I am a close friend of Arnie [owner of Pace Gallery].”

After Geldzahler’s 1994 death, Glimcher suggested that Patricof might want to buy Upbox even before the critic’s estate hit the auction block. (Suvero’s West Coast representative John Berggruen currently values the work in the range of $1.4 million.)

“Upbox has a serious provenance, considering that it comes from Henry,” Patricof said