Source: Phoenixmasonry
One of the world's best-known buildings, The United States Capitol, at Washington, D.C., was the creation of a succession of architects who were almost all Freemasons.
Originally designed by William Thornton (1759-1828), the work was completed by Brother Benjamin Latrobe (a pupil of the English architect Samuel Pepys Cockerell, 1754-1827) who also redesigned it after the War of 1812. The flanking wings and the great dome were added later by Brother Thomas Ustick Walter.
The cornerstone of the U.S. Capitol Building was laid with Masonic Honors on September 18, 1793 under the auspices of the Grand Lodge of Maryland. At the ceremony, President George Washington presided. Worshipful Brother Washington was assisted by R.W. Bro. Joseph Clarke, Grand Master pro. tem. of Maryland, Wor. Elisha C. Dick, Master of Alexandria Lodge No. 22 of Virginia (Washington's home Lodge) and Wor. Valentine Reintzel, Master of Lodge No. 9 of Maryland (now Potomac Lodge No. 5 of the District of Colombia).
Benjamin H. Latrobe (1764-1820) Sometimes called the "father of architecture in America." b. May 1, 1764 in Yorkshire, England. Educated in the University of Leipsic and entered the Prussian army; was twice wounded. He returned to England, and, in 1789, was made surveyor of the public offices and engineer of London. He arrived at Norfolk, Virginia on May 20, 1796, and soon became an engineer of the James River and Appomattox Canal, building the penitentiary in Richmond, and many private mansions. He moved
Thomas U. Walter (1804-1887) Was the architect of the U.S. Capitol extension of 1851-65. He was born September 4th, 1804 in Philadelphia. Served his apprenticeship under William Strickland, the architect of the U.S. Mint, Philadelphia. He began his practice as an architect in 1830. While in Washington, D.C. he also designed the extensions of the patent office, treasury, post office buildings, the dome on the old capitol, the congressional library, and the government hospital for the insane. He was an original member of the American Institute of Architects and was president of the same at the time of his death on October 30, 1887. He was a member of Colombia Lodge No. 91, Philadelphia, Pa.