William Penn Annex West in Philadelphia in Philadelphia County, Pennsylvania — The American Northeast (Mid-Atlantic)

Thomas Ustick Walter

(1804-1887)

Photographed by Glen Umberger, September 2, 2017

1. Thomas Ustick Walter (1804-1887) Marker

Inscription. Nationally prominent Philadelphia architect who designed the US Capitol dome and wings and Girard College. He was consulting architect for Philadelphia's City Hall. A founder of the American Institute of Architects, he served as its president. Walter lived near here 1837-41.

Erected 2009 by Pennsylvania Historical and Museum Commission.

Topics and series. This historical marker is listed in this topic list: Architecture. In addition, it is included in the Pennsylvania Historical and Museum Commission (PHMC) series list.

Location. 39° 57.235′ N, 75° 9.621′ W. Marker is in Philadelphia, Pennsylvania, in Philadelphia County. It is in William Penn Annex West. It is on Arch Street, on the left when traveling west. Touch for map. Marker is at or near this postal address: 1216 Arch Street, Philadelphia PA 19107, United States of America. Touch for directions.

Regionally, this marker is in Southeast Pennsylvania. It is also in the American Northeast

and in the Mid-Atlantic.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

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Historically, it finds itself in what was once the Haudenosaunee (Iroquois) Confederacy,

New Netherland,

and one of the original Thirteen Colonies.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Dr. Constantine Hering (within shouting distance of this marker); Reading Terminal Market (within shouting distance of this marker); Friendship Gate (about 300 feet away, measured in a direct line); Water Gives Life (about 400 feet away); Anna E. Dickinson (about 600 feet away); 13th & Market (about 700 feet away); PSFS Building (about 700 feet away); Masonic Temple Philadelphia (about 700 feet away). Touch for a list and map of all markers in Philadelphia.

Credits. This page was last revised on November 26, 2025. It was originally submitted on October 6, 2017, by Glen Umberger of New York, New York. This page has been viewed 810 times since then and 36 times this year. Photo 1. submitted on October 6, 2017, by Glen Umberger of New York, New York. • Bill Pfingsten was the editor who published this page.