The Richard Meier-designed Old Westbury home known as the White Castle is back on the market. The asking price is now $6.25 million, down from $8.8 million when it came on the market in April.

The 11,000-square-foot Contemporary offers an unconventional architectural design, with a predominantly white exterior and interior complemented by walls of glass. Sitting on a five-acre property, the house features six bedrooms, four full bathrooms and four half-bathrooms.

advertisement | advertise on newsday

“It’s a true masterpiece in terms of architecture,“ says Maria Babaev of Douglas Elliman Real Estate, the new listing agent for the home.

Meier is famous for his pervasively white designs. The home is currently owned by architect Michael Harris Spector.

Among the more unique features are interior ramps, a helical staircase and an eight-foot Le Corbusier door that rotates on a pivot. The property includes a 20-by-45 in-ground pool, a pool house with a workshop, a DecoTurf tennis court and a front yard pond.

The taxes are $79,818.