3 World Trade Center was originally going to be 1,240 feet (378 m) tall. Construction of the building started in January 2008. Constuction stopped as there was no anchor tenant (a big business that gets a lot of customers). In 2014, construction continued after a company called GroupM became the anchor tenant. In August 2016, the concrete core of the building topped out, followed by the steel structure in October. The building opened on June 11, 2018.