The Capitol Rotunda and the Capitol Grounds have been used as the setting for a variety of events, ranging from memorial ceremonies and the reception of foreign dignitaries to the presentation of awards and the hosting of public competitions. This report identifies and categorizes uses of the Capitol Rotunda and Capitol Grounds authorized by concurrent resolutions since the 101st Congress.In most cases, use of the Capitol Rotunda requires a concurrent resolution agreed to by both the House and Senate. A concurrent resolution for the use of the Rotunda typically identifies the event and date for which use is authorized. Often, the resolution also directs physical preparations to be carried out under the supervision of the Architect of the Capitol.The House and the Senate agreed to 108 concurrent resolutions authorizing the use of the Rotunda between the 101st and the 117 th Congresses. No resolutions were agreed to in the first session of the 118th Congress. These resolutions can be divided into seven categories: (1) commemoration ceremonies; (2) Congressional Gold Medal ceremonies; (3) artwork unveilings; (4) presidential inauguration activities; (5) receptions or ceremonies honoring living people; (6) persons lying in state or honor; and (7) prayer vigils.Use of the Capitol Grounds can be authorized either by the passage of a concurrent resolution or through an application process with the Capitol Police.