Supermodel Christie Brinkley is selling nearly $50 million worth of Hamptons real estate.
Brinkley's Sag Harbor property is on the market for about $18 million.
The three-story colonial mansion was built in 1843 by a whaling captain. It still features much of its original carpentry, including the wide-plank floors, oak banister and multiple fireplaces. Brinkley purchased the four-bedroom residence in 2004 and completely personalized the space. Modern updates include a luxe soapstone sink and marble counters in the kitchen.
"Everything you see here is a touch of Christie," said Douglas Elliman broker Enzo Morabito, who is the agent for both listings. "It's a mix of the old and the new."
Morabito said the home's real value lies beyond its walls; nearly every room overlooks the bay. Just under 4½ acres, the property has a gunite pool, a waterfront fire pit and over 300 feet of sandy beach.
Brinkley's "Tower Hill" compound in Bridgehampton is listed for $29.5 million.
Named for its 50-foot observation tower, the hilltop home was built in 1891. Spanning 20 acres, the estate includes a five-bedroom main house, a four-bedroom guest house, a greenhouse conservatory and a separate artist studio. Outside is a private pond, a tennis court and a 75-foot swimming pool.
"This house is the epitome of what the Hamptons is about," said Morabito.
The "Uptown Girl" has proven to be a savvy Hamptons real estate investor. Brinkley's extensive renovation of each of the properties preserved their character, while infusing them with her personality.
"The choices of what type of property she has bought is brilliant," said Morabito. "It was all about the land."
For more celebrity mega-homes check out CNBC's "Secret Lives of the Super Rich." An all-new season premieres Thursday, September 28.
(Correction: An earlier version of this story misstated the number of bedrooms in the main house of the Bridgehampton property.)