the corridors of power

US /ðə ˈkɔrɪdɔrz əv ˈpaʊər/
UK /ðə ˈkɔrɪdɔrz əv ˈpaʊər/
"the corridors of power" picture
1.

places where important decisions are made and where people in power work

:
He spent his career working in the corridors of power, influencing policy decisions.
Many lobbyists try to gain access to the corridors of power.