Lyndhurst Mansion

Alexander Jackson Davis designed the core of Lyndhurst in 1838 for New York City mayor William Paulding Jr. He returned in the 1860s to more than double it for merchant George Merritt, adding pointed arches, crenellated towers, and asymmetrical massing that make it one of the country's best examples of Gothic Revival domestic architecture. Railroad and telegraph baron Jay Gould acquired the estate in 1880, decorating it with Herter Brothers furniture and Louis Comfort Tiffany windows, pieces that remain on display alongside Davis's original furnishings and period paintings. Gould lived here until his death in 1892; his daughters Helen and Anna preserved the property in the family for another half-century.

The Greenhouse That Wouldn't Burn

The real drama at Lyndhurst circles around the greenhouse. Gould's first attempt, a wood Moorish-style structure built in 1864, burned down within three months of his purchase. He replaced it with a cast-iron-and-steel Lord & Burnham greenhouse engineered to be fireproof, one of the largest private greenhouses in the country, holding roughly 40,000 plants, including 6,000 orchids and a night-blooming cereus cactus that drew crowds whenever it flowered. The iron frame still stands today, stripped down and under active restoration. Landscape tours walk you through it, unfurling the story of what it once contained.

Rose Garden and Grounds

Helen Gould Shepard laid out the rose garden in the early 1900s, and it peaks in June. The 67-acre grounds mix manicured lawn with scenic paths, a Hudson River vista toward West Point, and a bowling pavilion from 1894. The Classic Mansion Tour covers two floors and about 16 rooms in an hour; the Backstairs Tour gets you into the tower and servant spaces, while specialty landscape tours dig into the greenhouse and grounds on weekends in season.