WASHINGTON — President Donald Trump’s second-term agenda is being expressed not only through policies on immigration, tariffs and foreign conflicts, but also through a sweeping campaign to change the physical landscape of the nation’s capital. Since Trump returned to the White House, his administration has made changes to more than 100 structures across Washington, according to a tally cited in a recent discussion of the president’s construction projects. The work ranges from modifications to existing buildings to proposals for major new additions. Among the most prominent plans is a proposed $250 million ballroom at the White House. Trump has displayed renderings of the project during meetings in the Oval Office, including a session with NATO Secretary General Mark Rutte in October 2025. The building campaign has become a defining feature of Trump’s approach to governing Washington. Ben Terris, a reporter who recently met with the president, said Trump appears especially energized by construction and development. “There is nothing Trump enjoys more than talking construction,” Terris said. The changes are part of Trump’s effort to leave a visible imprint on federal property and the capital’s symbolic spaces. Large public buildings and historically significant sites in Washington are tied to the country’s civic identity, making alterations to them a matter of public interest beyond their cost or design. The proposed ballroom, in particular, raises questions about how federal property is altered, who pays for major projects and how decisions affecting national landmarks are made. The available details do not indicate that the ballroom has been completed or provide a final construction schedule. The administration’s building push comes as other parts of Trump’s second term have brought major changes to federal operations and public policy. Taken together, the construction projects offer a physical counterpart to the administration’s broader effort to reshape Washington and the institutions housed there.