Serving Congress and the Supreme Court, preserving America's Capitol, and inspiring memorable experiences

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Capitol Christmas Tree 2013
The regular practice of displaying a Christmas tree on the Capitol Grounds is...

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Guided Tours: Buildings on Capitol Hill
Official Tours of the U.S. Capitol Building are offered Monday through...

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Dr. William Thornton
 The Architect of the Capitol (AOC) is the builder and steward of America’s...

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Warehouses in Fort Meade, Maryland store items such as statues that were once displayed on the East Front of the Capitol.
The Architect of the Capitol is responsible for managing all of the buildings...

Senate Chamber

Senate Chamber

Senate Chamber
Overview 

The Senate Chamber is a rectangular, two-story room located in the center of the north wing. The nation's 100 senators sit at individual desks arranged on a tiered semicircular platform facing a raised rostrum. A visitor's gallery overlooks the chamber on four sides.

First used on January 4, 1859, the Senate chamber was designed by Thomas U. Walter, the architect of the Capitol extension. The chamber was built without windows to insulate senators from outside noise. Light was originally provided through a large skylight and ventilation came courtesy of steam-powered fans.

In 1949-1950 the chamber was reconstructed, the skylight removed, and the walls redesigned. Pilasters made from red Levanto marble replaced the cast-iron originals; the wooden rostrum was replaced with a larger version in marble; and the iron and glass ceiling was taken out and a new stainless steel and plaster ceiling installed. The alteration were intended to improve the chamber's acoustics and ventilation while ridding it of its mid 19th-century decor, which was then out of fashion.

Last Updated: September 17, 2012