Eisenhower Executive Office Building, Government office building on 17th Street NW in Washington, D.C., United States

The Eisenhower Executive Office Building stands on 17th Street NW between Pennsylvania Avenue and State Place, beside the White House. Its light grey granite facade, in the French Second Empire style, has rows of tall rectangular windows between columns and pilasters, a dark grey mansard roof with dormer windows and decorated chimneys, and a balustrade along the roofline. Inside, a corridor with a black-and-white checkerboard tile floor is lined by six fluted dark reddish-brown columns with ornate capitals, green walls above white wainscoting and brass chandeliers.

Commissioned by President Ulysses S. Grant, the building went up between 1871 and 1888 on the site of the 1800 War/State/Navy Building and the White House stables, designed by Alfred B. Mullett in the French Second Empire style. Its granite came from Vinalhaven, Maine, and the total cost reached $10,038,482. It was renamed for Dwight D. Eisenhower on November 9, 1999.

The building's nickname, SWAN, comes from the State, War and Navy departments it was built to house. Cast-iron doorknobs carry emblems showing which department occupied each room, and the Indian Treaty Room (Room 474) hosted Eisenhower's first televised presidential press conference on January 19, 1955.

Access is limited to staff and visitors with security clearance, so casual visits inside are not possible. Those interested in the exterior can view it from Pennsylvania Avenue, where pedestrians can walk along the sidewalk and see the front from different angles.

The doorknobs carry cast patterns showing whether a room belonged to the State, Navy or War Department, the three original tenants. Richard von Ezdorf designed much of the interior with fireproof cast-iron elements, including massive skylights above each main stairwell.