姐妹城市是两座城市通过签署官方协议而达成的长期合作伙伴关系，旨在推动文化交流和商务联系。华盛顿目前与14个国家的首都以及美国开国总统乔治·华盛顿 (George Washington)先祖的故乡英国桑德兰签有姐妹城市关系。

U.S. President-elect Donald Trump attends inauguration ceremonies in the Rotunda of the U.S. Capitol on January 20, 2025 in Washington, DC, USA. Donald Trump takes office for his second term as the ...