Romeo and Juliet, eat your heart out.

Romeo and Juliet, eat your heart out.

Ladies of London’s Julie Montagu is sharing inside Mapperton House, her incredible 400-year-old family estate that looks as if it was plucked from an English period piece.

The future Countess of Sandwich kicks the tour off in the landscaped gardens, and the archway where the health guru likes to do yoga poses.

Next she shows off, “what Mapperton is known for,” including rolling lawns, gorgeous ponds, and an endless array of flowers. “I’m still testing my green thumb,” she says. “Any time we need herbs, it’s nice to come here.”

While the stunning grounds are ideal for adults to enjoy, there’s another Montagu tradition that is the stuff of every kid’s dreams. “Every year we have an Easter egg hunt,” she says. “We actually forget sometimes where we’ve hidden the eggs, so it wouldn’t surprise me if I were to look in [an urn] and find an Easter egg.”

Inside, the walls are adorned with paintings of “the Montagu ancestors.” The library holds shelves upon shelves of the “Earl of Sandwich’s famous diaries.”

The master bedroom where Montagu’s in-laws stayed features a canopy bed that’s about 300 years old, and an ornate ceiling that’s “probably one of the most famous . . . in all of England.”

Her go-to spot, however, is a bit more Downton Abbey than The Crown. “This is my favorite room because it’s the warmest room in the house,” she says of the old-fashioned kitchen. With that she’s off to make — what else? – a sandwich.

Ladies of London returns tonight at 10 p.m. EST on Bravo.