Inside the oldest and most expensive mansion in Charleston, which is selling for $16 million, is said to be haunted, and was once owned by Abraham Lincoln's granddaughter

Courtesy of Handsome Properties; Wikimedia Commons; Business Insider

Despite its priceless historical value and design, the $16 million Sword Gate House in Charleston, South Carolina, is having a hard time finding a buyer.

• The Sword Gate House is the most expensive and oldest mansion in Charleston, South Carolina, with a whopping $16 million price tag.
• It's 200 years old and has nine bedrooms, lavish antique furnishings, and 12 fireplaces.
• It also boasts priceless historical value -the home was designed in the Federal Period, was the private residence of the granddaughter of President Abraham Lincoln at one point, and locals say it's inhabited by a friendly ghost.
• But it's spent nine stale years on and off the market with multiple price drops.

In the South Carolina city of Charleston sits a beautiful, 17,000-square-foot mansion immersed in history, luxury, and exquisite design - and no one seems to want to buy it.

The 200-year-old home, known as The Sword Gate House, was listed in 2009 and since then has seen multiple price drops from its original $23 million price tag; its current asking price is $16 million.

Check out the charming Southern estate and why it has struggled on the market.