Wee Wee Pads inventor Allen Simon recently listed his Fifth Avenue Apartment for $40 million.

The wealthy entrepreneur with a penchant for pet potty training purchased the ultra-luxurious NYC pad for $10.8 million back in 2000. Following Simon’s purchase, the residence underwent a comprehensive renovation.

Located at 66th Street and Fifth Avenue, the 5,427-square-foot residence boasts five bedrooms and five baths. Future residents will access the spacious apartment via a private elevator before heading toward the grand salon with its sweeping views of Central Park.

The home isn’t one for those who faint at the sight of the ornate. Gilt, lush crown moldings, carved wood, extravagant chandeliers, inlaid hardwood and marble tile floors, and dramatic tray ceilings abound. The formal dining room sets an heirloom mood with intricate molding, detailed cabinetry, and a fireplace.

Another stand-out space? The wood-paneled library, which is accented with gold leaf ceilings; heavy-handed dazzle, but it’s hard not to be impressed with the chutzpah of it: the evocation of the American age of Saturn which it sustains.

Additional amenities include large storage rooms, a staff room, two Eurocave wine cellars, and two spacious balconies. It’s broad, but spectacular.