US Capitol

HOUSE OF REPRESENTATIVES

Cannon House Office Building-  Office Numbers: All rooms have 3 digits, the first number indicating the floor the office is on. Example: Rep. Mark Green’s office is 533 CHOB and is on the fifth floor.
Tunnels: Take the elevators to the basement level to reach the underground tunnel access to Longworth and Rayburn. 

Longworth House Office Building Office Numbers: All rooms begin with the number 1, and have four digits. The second number indicates which floor the office is on. Example: Rep. Warren Davidson’s office is 1107 LHOB and is on the first floor.
Tunnels: Take the elevators to the basement level to reach the underground tunnel access to Cannon and Rayburn.

Rayburn House Office Building Office Numbers: All rooms begin with the number 2, and have four digits. The second number indicates which floor the office is on. Example: Rep. Mark Meadows’ office is 2160 RHOB and is on the first floor. 
Tunnels: Take the elevators to the subbasement level to reach the underground tunnel access to Longworth and Rayburn.   

SENATE- Inside walkways to all buildings.