A historic Manhattan townhouse worth an estimated $29 million will be auctioned off next month.

The 37-foot-wide property spans a total 10,987 square feet and includes eight bedrooms, nine-and-a-half bathrooms, nine gas fireplaces, an elevator, indoor resistance pool and four terraces.

Located at 3 Riverside Drive — near the southern end of Riverside Park —  the 19th century Kleeberg Residence will go to auction on Dec. 20 through Concierge Auctions in cooperation with Daniel Joory and Howard Morrel of Engel & Völkers.

“We are excited by the opportunity and prospects this auction presents. Buyers from around the world will have a once-in-a-lifetime opportunity to purchase a historic and rare 37-foot-wide Upper West Side townhouse,” Joory said. “Designed by renowned Architect Charles Pierrepont H. Gilbert with high ceilings and a limestone façade, the home still has all of its original woodwork and offers unobstructed views of Riverside Park and Hudson River. It's quintessential New York City."

This landmark property has been completely renovated and also features four-story mahogany and marble staircase, oval metal skylight, modern chef’s kitchen with exposed brick walls and stainless steel counters, a modern bathroom with eight showerheads and Jacuzzi tub, and a sauna and gym.

The auction will start at 6 p.m., with a live event at the SoHi Room, 246 Spring St., Manhattan, or via the company’s custom mobile bidding app – Instant Gavel – from anywhere in the world. The townhouse is estimated to sell between $13 and $16 million.