It's about two-and-a-half times as big as Washington National Cathedral
In other words, 176 arpents is 2.6 times the size of Washington National Cathedral, and the size of Washington National Cathedral is 0.38 times that amount.(a.k.a. Cathedral Church of Saint Peter and Saint Paul) (Washington, DC) (total plot)
Sitting atop the 115 m (377 ft) tall Mount Saint Alban at the corner of Massachusetts and Wisconsin Avenues, Washington National Cathedral sits on a landscaped, 67 arpents plot.
It's about two-and-a-half times as big as The United States Capitol
In other words, 176 arpents is 2.6 times the size of The United States Capitol, and the size of The United States Capitol is 0.38 times that amount.(Washington, DC) (Immediate grounds size)
The grounds of United States Capitol, at the center of Washington DC's quadrants, consists of about seventeen buildings on a 67 arpents plot. While the Capitol Building is the central feature, other buildings include the Supreme Court Buildings and the Library of Congress Buildings, as well as several monuments and sculptures.
It's about three times as big as Grand Central Station
In other words, 176 arpents is 3 times the size of Grand Central Station, and the size of Grand Central Station is 0.3 times that amount.(formally Grand Central Terminal, a.k.a. Grand Central, a.k.a. GCT) (New York City, New York) (total terminal area).
Grand Central station, the largest train station in the world by platform count, measures 60 arpents in total area. The large flag which was suspended from the concourse ceiling following the September 11th 2001 terrorist attacks measures about 0.02 arpents.
It's about three-tenths as big as Monaco
In other words, 176 arpents is 0.3 times the size of Monaco, and the size of Monaco is 3 times that amount.(a.k.a. the Principality of Monaco, a.k.a. Principauté de Monaco, a.k.a. Principatu de Múnegu)
One of the smallest nations in the world, Monaco is a city-state located on the French border of the Mediterranean Sea, which measures 600 arpents in total area.
It's about four times as big as The Citadelle
In other words, 176 arpents is 4 times the size of The Citadelle, and the size of The Citadelle is 0.25 times that amount.(a.k.a. La Citadelle, a.k.a. Québec Citadelle, a.k.a. The Citadel) (Québec City, Quebec, Canada) (for the fortified enclosure)
The Citadelle of Quebec, containing Canada's oldest military buildings measures about 4.40 arpents in total area. The fortress sits on a 90-meter cliffside, overlooking the St. Lawrence River.
It's about four times as big as Eden Park
In other words, 176 arpents is 4.0 times the size of Eden Park, and the size of Eden Park is 0.249 times that amount.(Auckland, Auckland Province, New Zealand) (total grounds)
The largest stadium in New Zealand, Eden Park in Auckland measures about 43.80 arpents over its total grounds. It is primarily a rugby and cricket stadium. The Park offers rooftop tours, where fans can walk along the 39-meters-high roof of the stands.
It's about four-and-a-half times as big as The Pentagon
In other words, 176 arpents is 4.37 times the size of The Pentagon, and the size of The Pentagon is 0.229 times that amount.(a.k.a. United States Department of Defense Headquarters) (Washington, D.C.) (total floor area)
The Pentagon, the world's largest office building, contains a total floor area of 40.30 arpents. Built during World War II, the designers compensated for the steel rations then in effect by using 310,000 cu. m of concrete in the construction efforts.