The Taj Mahal's architectural features closely resemble Humayun's Tomb built in 1565-72, which established the Mughal style of architecture with central dome, high arches, and charbagh (four-part garden). Both monuments feature the white marble dome with a finial, pishtaq (arched portals), and symmetrical gardens. Humayun's Tomb served as the prototype for later Mughal mausoleums including the Taj Mahal, which represents the zenith of this architectural tradition with greater refinement and scale.