Mercantile National Bank Building

The Mercantile National Bank Building (known colloquially as The Merc) is a 31-story, 159.4 m (523 ft) skyscraper at 1800 Main Street in the Main Street district of downtown Dallas, Texas. It is the former home of the Mercantile National Bank, which later became MCorp Bank.

Source: Wikipedia — Mercantile National Bank Building (CC BY-SA 4.0)