Category:Built in the United States in 1540

States of the United States: Alabama · Alaska · Arizona · Arkansas · California · Colorado · Connecticut · Delaware · Florida · Georgia (U.S. state) · Hawaii · Idaho · Illinois · Indiana · Iowa · Kansas · Kentucky · Louisiana · Maine · Maryland · Massachusetts · Michigan · Minnesota · Mississippi (state) · Missouri · Montana · Nebraska · Nevada · New Hampshire · New Jersey · New Mexico · New York (state) · North Carolina · North Dakota · Ohio · Oklahoma · Oregon · Pennsylvania · Rhode Island · South Carolina · South Dakota · Tennessee · Texas · Utah · Vermont · Virginia · Washington (state) · West Virginia · Wisconsin · Wyoming – the District of Columbia: Washington, D.C.
the insular areas of the United States: American Samoa · Guam · the Northern Mariana Islands · Puerto Rico · the United States Virgin Islands – the United States Minor Outlying Islands: Bajo Nuevo Bank · Baker Island · Howland Island · Jarvis Island · Johnston Atoll · Kingman Reef · Midway Atoll · Navassa Island · Palmyra Atoll · Serranilla Bank · Wake Island