Picture this: towering ballrooms, marble staircases, and gardens that stretch as far as your eyes can see. The Astor family built some of America's most jaw-dropping mansions during the Gilded Age, ...

The 11,500-square-foot building has seven floors, including a cellar and a roof. It has passed through many hands over the years, including those of an exiled Russian prince. While HBO's "The Gilded ...

A Gilded Age mansion in the foothills of New York’s Catskill Mountains is listed for just shy of $3 million after being ...

A dazzling Fifth Avenue mansion designed by the famed Gilded Age architect Stanford White is back on the market — this time with a major price cut. The sprawling 16,000-square-foot limestone home at ...

Carlos Slim, one of the top 10 wealthiest people in the world, is currently looking for someone to take an $80 million New York City mansion off his hands. Mexico's richest man, with a net worth of ...

Residences surrounding Central Park dominated the list, as usual, with the exception of one $60 million deal downtown ...

If a storybook mansion with a wild past sounds like your dream home, this Hudson Valley estate delivers—wallet permitting. Spanning over 2,000 acres in Millbrook, New York, it features turrets, lakes, ...

In Lenox, Mass., an 1893 mansion called Ventfort Hall that was built for J.P. Morgan’s sister was in disrepair. A bootstrapped foundation has spent nearly three decades rebuilding, repairing and ...