[2][3] It has since been incorporated into the Blair House complex serving high-profile official visitors to the capital.

The Peter Parker House stands at the southern end of Jackson Place, presenting a side to Pennsylvania Avenue, across from Lafayette Square.

Funded by philanthropist Andrew Carnegie, he established it as a vehicle to promote and seek an end to international warfare.

During its tenure, the organization also acquired the adjacent buildings (704 and 708 Jackson Place), and expanded into them.

[4] In the early 1980s, it along with 704 Jackson Place were internally combined into a single building and then merged with Blair House by way of a connecting structure occupying the alleyway that had separated them.