A sprawling pedestrian tunnel system under Capitol Hill allows staffers and members of congress to securely traverse the office buildings, Library of Congress and Capitol building. They were built because of Washington's disgusting weather - not for any security concerns.

August 16, 2016

Elliot Carter

Downtown

Peek Inside the Treasury Department's Cash Vault

August 16, 2016

Elliot Carter

Downtown

Peek Inside the Treasury Department's Cash Vault

Renovators at the Treasury Building made an unexpected discovery in 1985 behind the drywall in the old office of the Treasurer. They had stumbled across the forgotten armored vault that used to guard the government's cash.

June 12, 2016

Elliot Carter

Downtown

Capitol Gatehouses and Gateposts

June 12, 2016

Elliot Carter

Downtown

You might have noticed these unmarked stone structures on Constitution Avenue. They are the old gatehouses and gate posts that used to watch over the Capitol.