Expensive Mansion, Nevada, United States

This amazing Nevada mansion is on sale for $3,000,000.
A mansion is a very large dwelling house. U.S. realtors define a mansion as a dwelling of over 8,000 square feet (740 m2). A traditional European mansion was defined as a house which contained a ballroom and tens of bedrooms. Today, however, there is no formal definition beyond being a large and well-appointed house.