The National Cathedral, officially known as the Cathedral Church of Saint Peter and Saint Paul in the City and Diocese of Washington, is located in Washington, D.C. It is an Episcopal cathedral and serves as a prominent place of worship and a national landmark. Construction began in 1907 and was completed in 1990, showcasing Gothic architectural style and featuring stunning stained glass windows. The cathedral is the sixth largest in the world and can accommodate over 1,000 people. It hosts various events, including religious services, concerts, and national ceremonies, making it a significant cultural and historical site in the United States.