Pisa can relax: The “Leaning Tower of Dallas” is just a memory.

An 11-story office building in Texas that refused to be demolished for two weeks, turning it into an accidental tourist attraction and social media sensation, finally came crashing down on Monday.

A wrecking ball took one final swing at the former Affiliated Computer Services building, causing the concrete and steel structure near downtown Dallas to vanish in a cloud of dust and debris.

Lloyd D. Nabors, whose Dallas-based demolition company was in charge of the project, said in a statement Monday that he would miss the camaraderie that had developed over the past two weeks, but was eager to see the property’s transformation into a mixed-use development.