Serve | Preserve | Inspire — Stewards of the iconic buildings and grounds of #USCapitol Hill. More AOC: 🙂 @aochiring, 🪴 @usbotanicgarden, 🎟 @visitthecapitol

Washington, D.C.
Joined November 2008
Take a deeper look at the four large history paintings by John Trumbull in the #USCapitol Rotunda, which depict pivotal moments before, during and after the Revolutionary War. 🎬 Watch the full video: youtube.com/watch?v=_eOngbX0… #America250
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"This South East corner stone, of the Capitol of the United States of America in the City of Washington, was laid on the 18th day of September 1793..." 🥁: aoc.gov/explore-capitol-camp…
The tools, supplies and sketches seen below offer a glimpse into the meticulous craft behind some of the U.S. Capitol's most recognizable murals... Reminders of the artistry and dedication that shaped the Cox Corridors. 🔍📖🔗: aoc.gov/explore-capitol-camp…
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Today is 100 days until Christmas, but the U.S. Capitol's tree will arrive in 65 (on November 20)! 🎉
Selected 🎄 species & height just announced!📣: aoc.gov/explore-capitol-camp… Chosen from a different national forest each year, the 2026 tree will hail from Idaho's National Forests, named for the Nimíipuu (Nez Perce) people & their term Koos-Koos-Kai-Kai, which means "clear water."
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American persimmon! Native to the region, this dioecious species has a distinct corky bark with alligator skin texture. 🍃🌳🐊
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25 years later. We remember. 🇺🇸 Smoke from the Pentagon. U.S. Capitol evacuated; spared when Flight 93 overcame hijackers, crashing in Pennsylvania. Names of the passengers and crew are displayed on a plaque near the Rotunda. A commemorative oak is planted on the Grounds.
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Architect of the Capitol (AOC) retweeted
Here is your chance to see one of the true icons of American history — a William J. Stone engraved copy of the Declaration of Independence, printed by the State Department in 1823. This extremely rare document is on view at the U.S. Capitol as part of its “Spirit of ’76 — Congress Celebrates the Nation” exhibit. If you see an image of the Declaration reproduced anywhere, it is likely a Stone copy and not the original manuscript at the National Archives, which is faded and barely legible. This exhibit features original artifacts, images and videos that illustrate how Congress and Americans have commemorated the Declaration on its milestone anniversaries. @visitthecapitol Link to exhibit: visitthecapitol.gov/explore/…
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Architect of the Capitol (AOC) retweeted
Happy birthday to the U.S. Capitol Guide Service! 🎉 For 150 years, official Capitol Guides have welcomed countless visitors to the halls of the U.S. Capitol and served as the public face of Capitol tours. Explore the history: visitthecapitol.gov/guide150
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Architect of the Capitol (AOC) retweeted
Our September schedule of Capitol Conversations presentations is now live! Join us online every Wednesday at 2 p.m. for engaging discussions on a variety of U.S. Capitol-related topics. visitthecapitol.gov/capitol-…
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Architect of the Capitol (AOC) retweeted
Outdoor tours of the beautiful U.S. Capitol Grounds resume September 1! 🌳🌻 Meet our knowledgeable Guides at 11 a.m., Monday-Saturday, at the north entrance of the Capitol Visitor Center. No reservations or tour passes required. visitthecapitol.gov/visit/sp…
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A design for the Car of History sculpture first appears in this August 1815 drawing by architect Benjamin Henry Latrobe. The drawing shows his proposal for rebuilding the former Hall of the House of Reps, which was destroyed when British troops burned the Capitol #OTD 1814. 🔥
Follow the path the British took #OTD 1814 to burn the #USCapitol, learn more about damage done to this historic building, and discover how the 2nd Architect of the Capitol helped prevent total destruction.
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Architect of the Capitol (AOC) retweeted
Since 1876, official tour guides of the U.S. Capitol have served Congress and visitors. Explore key moments and learn more about the 150-year history of the Capitol Guide Service: visitthecapitol.gov/guide150
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Selected 🎄 species & height just announced!📣: aoc.gov/explore-capitol-camp… Chosen from a different national forest each year, the 2026 tree will hail from Idaho's National Forests, named for the Nimíipuu (Nez Perce) people & their term Koos-Koos-Kai-Kai, which means "clear water."
It's time to select the 2026 U.S. Capitol Christmas tree. See you soon, Idaho! 🌲🛶🪻 #ChristmasInJuly
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These pollutant tolerant London plane trees are great for our urban environment! Used on the west grounds in double rows by Frederick Law Olmsted to guide your eye to the Capitol Dome. 😍
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The @smithsonian (founded #OTD 1846 🎉) is celebrated in the U.S. Capitol's Great Experiment Hall with a mural of its first building — the Castle: aoc.gov/explore-capitol-camp…. Seen below as both sketch and final piece by Allyn Cox. 🎨
The tools, supplies and sketches seen below offer a glimpse into the meticulous craft behind some of the U.S. Capitol's most recognizable murals... Reminders of the artistry and dedication that shaped the Cox Corridors. 🔍📖🔗: aoc.gov/explore-capitol-camp…
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✨ Capitol illumination. ✨ The tradition of the U.S. Capitol Dome being lit every night until midnight began in August 1917: aoc.gov/explore-capitol-camp…
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The Declaration of Independence was drafted in June 1776 and adopted in July, but most delegates signed it August 2 and news reached London on August 10. Five famous depictions featuring the Declaration can be found in the U.S. Capitol: aoc.gov/explore-capitol-camp… 📜🇺🇸 #America250
🎞️: There were 56 signers of the Declaration of Independence. Trumbull represented 47 figures, including five who were not signers. #America250
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Today, our Urban Forester is sharing about his favorite tree, the catalpa craze and why this ecological warrior is sometimes called the "cigar tree." 💌🛤️🌳
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Say hello to our 2026 summer interns! 👋 We look forward to seeing the impact they’ll make as they dive into their projects and grow with us throughout their time here. #NationalInternDay
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Architect of the Capitol (AOC) retweeted
Teams of AOC employees, including mechanics, insulators, instrumentation controls technicians and other HVAC experts, work on temperature control across the Capitol campus. 🧢👏
From blocks of ice and wooden fans to modern air conditioning systems, explore the history of cooling the U.S. Capitol: aoc.gov/explore-capitol-camp…
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From blocks of ice and wooden fans to modern air conditioning systems, explore the history of cooling the U.S. Capitol: aoc.gov/explore-capitol-camp…
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Senate Fountain operated for the first time #OTD 1932. 🦁🌳
DYK #SenateParks fountain consists of 3 separate components: main basin, lower level basins + reflecting pool? ⛲️ Water is piped underground from the basin to three sculpted bubbler fountains in the terrace's north wall. From there water is again piped to the lower level pool.
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