The question we are presented with in this appeal is whether a sidewalk constructed on private property to replace a public sidewalk, accommodating pedestrian traffic adjacent to Las Vegas Boulevard, is a public forum subject to the protections of the First Amendment. The Venetian Resort Casino sued Clark County, the Clark County District Attorney, and the Las Vegas Metropolitan Police Department (collectively, “the County”), seeking a declaratory judgment that the replacement sidewalk constructed on its property is not a public forum and an injunction requiring the County to recognize and enforce the Venetian's right to exclude labor union demonstrators from the sidewalk. The district court denied the Venetian's request for an injunction and granted summary judgment in favor of the County and intervenors, the Local Joint Executive Board of Las Vegas, Culinary Workers Union, Local No. 226, and Bartenders Union, Local No. 165 (collectively, “the Unions”), and the ACLU of Nevada. We have jurisdiction under 28 U.S.C. § 1291, and we affirm.