AsianFin -- U.S. President Donald Trump made an unusual visit to the Federal Reserve on Thursday, donning a hard hat as Chairman Jerome Powell led him on a tour of the central bank’s ongoing $2.5 billion renovation project.

The visit came after weeks of criticism from Trump over the cost of the overhaul. During the tour, the two men briefly clashed when Trump claimed the project would cost more than reported—only to be fact-checked by Powell in front of reporters.