In the town of Rumson, in the county of Monmouth, there are many houses so large that their occupants must surely need a GPS system to navigate from master bedroom to home theatre.

No one is without an interior designer. But name one house that has 45! Even the most landed of the town’s gentry are impressed.

We are speaking of the huge Metcalf estate. And this month, it has been turned into a designer showcase (www.statelyhomesbythesea.com) to benefit Visiting Nurses of Central Jersey. The stunning display has already attracted thousands of visitors.

The estate is the largest privately owned property in Rumson- 30 acres of horse and livestock farm, crowned by an 11,000 square foot house. Into these spaces designers from across the state, and New York City have left their creative imprints.

Stick your head into Cinderella’s Closet, designed by artist Mary Connell Gaynor of Rumson (732-546-7417). Linger in a guest room designed by Karla Trincanello (www.interiordecisions.com) and dedicated to a fantasy visit by Jackie Onassis. Details like the former first lady’s favorite mementos, and her riding attire, are carefully arranged next to a French-styled canopy bed.

In the midst of tradition, there was the fun of a spa-like third floor retreat by our friends at Red Ginger Home (www.redgingerhome.com) and the zing of a yellow room by Eli Dweck Designs (www.elidweckdesigns.com) of Oakhurst.

You’ll complete your tour in the dining room by Barbara Ostrom Associates of Mahwah, (201-529-0444) – there are with bursts of orange and bright flowers relected by huge crystal chandeliers.

The showcase is extended through June 3rd. It’s worth a detour from the beach. You may find your dream design, somewhere in this fantasy house by the sea.