SEVENTH AMENDMENT TO LIMITED PARTNERSHIP AGREEMENT OF THE MILLS LIMITED PARTNERSHIP

Exhibit 10.8

SEVENTH AMENDMENT TO

LIMITED PARTNERSHIP AGREEMENT

OF

THE MILLS LIMITED PARTNERSHIP

THIS SEVENTH AMENDMENT TO LIMITED PARTNERSHIP AGREEMENT OF THE MILLS LIMITED PARTNERSHIP (this “Amendment”), dated as of August 23, 2004, is entered into by The Mills Corporation, a Delaware corporation, as general partner (the “General Partner”) of The Mills Limited Partnership (the “Partnership”), for itself and on behalf of the limited partners of the Partnership.

WHEREAS, Section 4.2(A) of the Limited Partnership Agreement of the Partnership (as heretofore amended, the “Partnership Agreement”) authorizes the General Partner to cause the Partnership to issue additional Partnership Units (as defined in the Partnership Agreement) in one or more classes or series, with such designations, preferences and relative, participating, optional or other special rights, powers and duties, all as determined by the General Partner in its sole and absolute discretion;

WHEREAS, Section 4.2(A) of the Limited Partnership Agreement provides that no additional Partnership Units may be issued to the General Partner unless they are issued in connection with an issuance of capital stock of the General Partner having economic rights that are substantially similar to the economic rights of such Partnership Units and the General Partner contributes the proceeds of such capital stock to the Partnership;

WHEREAS, the General Partner has entered into a Purchase Agreement, dated as of August 17, 2004, pursuant to which the General Partner has agreed to issue shares of a newly created series of capital stock, designated 6.75% Series F Convertible Cumulative Redeemable Preferred Stock (the “Series F Preferred Stock”);

WHEREAS, pursuant to the authority granted to the General Partner pursuant to Section 11.1(A) of the Partnership Agreement, the General Partner desires to amend the Partnership Agreement (i) to establish a new class of Preferred Units, to be entitled Series F Convertible Cumulative Redeemable Preferred Partnership Units (the “Series F Preferred Partnership Units”), and to set forth the designations, rights, powers, preferences and duties of such Series F Preferred Partnership Units, which are substantially similar to those of the Series F Preferred Stock, and (ii) to make certain other changes to the Partnership Agreement.

NOW, THEREFORE, in consideration of the premises and for other good and valuable consideration, the receipt and sufficiency of which hereby are acknowledged, the General Partner hereby amends the Partnership Agreement, as follows:

1. Amendments to Section 4.2 . Section 4.2 of the Partnership Agreement is hereby amended by adding after Section 4.2(H) the following section:

I. Series F Preferred Partnership Units . Under the authority granted to it by Section 4.2(A) hereof, the General Partner hereby establishes an additional class of Preferred Units entitled “Series F Convertible Cumulative Redeemable Preferred Partnership Units” (the “Series F Preferred Partnership Units”). Series F Preferred Partnership Units shall have the designations, preferences, rights, powers and duties as set forth in Exhibit 10 hereto.

2. Exhibits to Partnership Agreement .

(A) The General Partner shall maintain the information set forth in Exhibit 1 to the Partnership Agreement, as such information shall change from time to time, in such form as the General Partner deems appropriate for the conduct of the Partnership’s affairs, and Exhibit 1 shall be deemed amended from time to time to reflect the information so maintained by the General Partner, whether or not a formal amendment to the Partnership Agreement has been executed amending such Exhibit 1 . In addition to the designation of Series F Preferred Partnership Units pursuant to this Seventh Amendment, such information shall reflect (and Exhibit 1 shall be deemed amended from time to time to reflect) the issuance of any additional Partnership Units to the General Partner or any other Person, the transfer of Partnership Units and the redemption of any Partnership Units, all as contemplated herein.

(B) The Partnership Agreement is hereby amended by attaching thereto as Exhibit 10 the Exhibit 10 attached hereto.

3. Certain Capitalized Terms . All capitalized terms used in this Seventh Amendment and not otherwise defined shall have the meanings assigned in the Partnership Agreement. Except as modified herein, all terms and conditions of the Partnership Agreement shall remain in full force and effect, which terms and conditions the General Partner hereby ratifies and affirms.

4. Severability . If any term or other provision of this Seventh Amendment is held by a court of competent jurisdiction or other authority to be invalid, void or unenforceable, the remainder of the terms and provisions of this Seventh Amendment shall remain in full force and effect and shall in no way be effectively impaired or invalidated.

5. Full Force and Effect . Except as expressly amended hereby, the Partnership Agreement shall remain in full force and effect.

[SIGNATURES APPEAR ON FOLLOWING PAGE]

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IN WITNESS WHEREOF, the undersigned has executed this Seventh Amendment as of the date first set forth above.

EXHIBIT 10

DESIGNATION, PREFERENCES AND RIGHTS OF

SERIES F CONVERTIBLE CUMULATIVE REDEEMABLE

PREFERRED PARTNERSHIP UNITS

OF THE MILLS LIMITED PARTNERSHIP

The Series F Convertible Cumulative Redeemable Preferred Partnership Units (the “ Series F Preferred Units ”) shall have the following preferences, rights, powers and duties:

Section 1. Distributions .

(a) Subject to the preferential rights of the holders of any class or series of Partnership Units of the Partnership ranking senior to the Series F Preferred Units as to distributions, the General Partner, in its capacity as the holder of the then outstanding Series F Preferred Units, shall be entitled to receive, when, as and if declared by the General Partner, out of funds legally available therefor, distributions payable in cash in an amount per Series F Preferred Unit equal to the per share dividend payable on the Series F Preferred Stock on such Distribution Payment Date (defined below). The distributions on each Series F Preferred Unit shall accrue and be cumulative from August 23, 2004 (the “ Original Issue Date ”) and shall be payable quarterly in arrears on the first day of February, May, August and November of each year (each, a “ Distribution Payment Date ”), commencing November 1, 2004; provided, however , that if any Distribution Payment Date is not a Business Day, then the distribution which would otherwise have been payable on such Distribution Payment Date may be paid on the next succeeding Business Day with the same force and effect as if paid on such Distribution Payment Date, and no interest or additional distributions or other sums shall accrue on the amount so payable from such Distribution Payment Date to such next succeeding Business Day. The amount of any distribution payable on the Series F Preferred Units for any full distribution period or any partial distribution period shall be prorated and computed on the basis of a 360-day year consisting of twelve 30-day months (it being understood that the distribution payable on November 1, 2004 will be for less than a full distribution period). Distribution period shall mean the period from and excluding the Original Issue Date to and including the first Distribution Payment Date, and each subsequent period from and excluding a Distribution Payment Date to and including the next succeeding Distribution Payment Date or other date as of which accrued distributions are to be calculated.

(b) No distributions on the Series F Preferred Units shall be declared by the General Partner or paid or set apart for payment by the Partnership at such time as the terms and provisions of any agreement of the General Partner or the Partnership, including any agreement relating to indebtedness of either of them, prohibits such declaration, payment or setting apart for payment or provides that such declaration, payment or setting apart for payment would constitute a breach thereof or a default thereunder, or if such declaration or payment shall be restricted or prohibited by law.

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(c) Notwithstanding anything contained herein to the contrary, distributions on the Series F P