The cornerstone is laid at the Cathedral Church of Saint Peter and Saint Paul (better known as Washington National Cathedral) in Washington, D.C.

The Cathedral Church of Saint Peter and Saint Paul in the City and Episcopal Diocese of Washington, commonly known as Washington National Cathedral or National Cathedral, is a cathedral of the Episcopal Church. The cathedral is located in Washington, D.C., the capital of the United States. The structure is of Neo-Gothic design closely modeled on English Gothic style of the late fourteenth century. It is the second-largest church building in the United States, and the third-tallest building in Washington, D.C. The cathedral is the seat of both the presiding bishop of the Episcopal Church and the bishop of the Episcopal Diocese of Washington. Over 270,000 people visit the structure annually.

Washington, D.C., officially the District of Columbia and commonly known as simply Washington or D.C., is the capital city and federal district of the United States. The city is on the Potomac River, across from Virginia, and shares land borders with Maryland to its north and east. It was named after George Washington, the first president of the United States. The district is named for Columbia, the female personification of the nation.

September 29 is the 272nd day of the year in the Gregorian calendar; 93 days remain until the end of the year.