See United States v. 91.90 Acres of Land in Monroe Cty. (Cannon Dam), 586 F.2d 79, 87 (8th Cir. 1978) (“[I]t is firmly settled that one does not value the []land as one factor and then value the improvements as another factor and then add the two values to determine market value. That is true because the value of the improved property may be greater than, equal to, or even less than the property in its unimproved state.”).