Depressing photos show closed Washington, DC monuments and attractions as the government shutdown continues

The Smithsonian announced the closure of all of its museums on Wednesday.

Signs were posted outside the National Museum of American History, which receives around 6 million annual visitors.

Source: Statista

The National Zoo also closed its gates to visitors, though they insisted that "all animals will continue to be fed and cared for."

Source: Smithsonian's National Zoo and Conservation Biology Institute

Twitter users were up in arms about the suspension of the zoo's "Panda Cam," which live streams the activity of three giant pandas.

Source: Reuters

A few tourists traveled to The National Museum of African American History, only to encounter signs saying it was closed.

A seven-year-old boy peered inside the museum to catch a glimpse.

Unsuspecting tourists also encountered an empty carousel at the National Mall on Wednesday.

The National Archives closed its doors at the beginning of the shutdown on December 22.

Source: The Washington Post

The National Christmas Tree was closed temporarily, though it reopened in time for the holiday.

Source: CNN

The closure of the National Park Service resulted in trash-laden streets throughout the city.

Litter remains scattered near the base of the Washington Monument.

The White House can be seen behind an overflowing trash can.

The Russell Rotunda at the US Capitol building is eerily desolate.

On day six of the shutdown, the halls outside Democratic House Minority Whip Steny Hoyer's office were filled with boxes and furniture.

Democrats will take control of the US House of Representatives on Thursday, though it's unlikely to put an end to the shutdown.

Read more: Filthy parks, closed museums: U.S. government shutdown grinds on