Mosaic Dallas, formerly Fidelity Union Life Insurance Building, is a residential development in the City Center District of downtown Dallas, Texas, United States, adjacent to Thanks-giving Square.

[2] Fidelity Union vacated the complex in 1985 and Texas Power & Light (TXU), the other major tenant, moved out in 1992.

The complex remained vacant until Hamilton Properties Corporation bought it in 2004, rechristening it as The Mosaic, in honor of the thousands of green tiles that line the buildings' facade.

The renovation included construction of 440 apartments with interiors designed by three noted architects: Ike Isenhour, Stanley Ray, and MAA.

The residences were opened to occupancy on 6 December 2007 and the ground floor featured a restaurant and fitness center.