State dept has a fantastic collection of early american furnishings. was collected by the guy who also generated the white house collection. clement conger.

the pentagon has a large collection of remington bronzes

capitol is worth doing.

Library of congress is a magnificent building

you can arrange all 4 on line.

the OAS has a nice atrium with a few parrot type birds.

not worth the trouble, unless i missed something.

renwick gallery is a nice tour also.