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Holt House
Photo: StephenHansen1, Public domain, via Wikimedia Commons · tap to enlarge
National Register of Historic Places

Holt House

Also known as Administration Building, National Zoological Park

On the National Register since 197353 years
GeorgianListed 1973Washington
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About

About Holt House

Holt House, at Adams Mill Rd. in the National Zoological Park, was added to the National Register of Historic Places on Apr 24, 1973. The Register lists it for its architecture, at the state level. It describes its style as Georgian, as it does for 14 other District of Columbia listings.

What it isSmithsonian Institution building on the National Zoo grounds. From Wikidata (CC0). Read about it on Wikipedia ↗

PDFRead the original nominationThe form that put it on the Register, with its history, photos and a map · 45 MB · National Archives↗
Through the years

1827 to today

  1. 1827Built
  2. 1973Added to the National Register of Historic Places
  3. 2026On the Register for 53 years

Memories of Holt House

The record says what it is. Neighbors know what it means.

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Questions about Holt House

Is Holt House on the National Register of Historic Places?

Yes. It was added on Apr 24, 1973 (Register number 73002090).

Is Holt House a National Historic Landmark?

No. It is on the National Register; District of Columbia has 75 National Historic Landmarks.

Can you visit Holt House?

Our record doesn’t say whether it is open to visitors. Many listed buildings are private, so it may only be seen from the street.

Where can I read the history of Holt House?

In its National Register nomination, the form that put it on the Register: a 45 MB PDF at the National Archives, linked on this page.

Sources: National Park Service, National Register of Historic Places (05/22/2026) · National Archives catalog record 117692221 · Wikidata. Map tiles © OpenStreetMap contributors.