Castillo de San Marcos in St. Augustine, Florida

Photo credit: Jonathan Zander

Barnegat Lighthouse in Barnegat Light, New Jersey

Photo credit: Thisisbossi

Alcatraz Island in San Francisco Bay, California

Photo credit: David Corby

Marriott Wardman Park Hotel in Washington, D.C.

Photo credit: Jürgen Matern

Galena Historic District in Galena, Illinois

Photo credit: IvoShandor

East Parish Burying Ground in Newton Corner, Massachusetts

Photo credit: Thomas Kelley

Whittier Hotel in Detroit, Michigan

Photo credit: Andrew Jameson

City Hall Park, c. 1911, with New York City Hall on the left, in New York City

Photo credit:

Lamonta Compound – Prineville Supervisor's Warehouse in Prineville, Oregon

Photo credit: Ian Poellet

Buttonwood Covered Bridge in Jackson Township, Lycoming County, Pennsylvania

Photo credit: Ruhrfisch

Part of the Mendota State Hospital Mound Group in Madison, Wisconsin
Photo credit: James Steakley

Bent's Old Fort National Historic Site in Otero County, Colorado

Photo credit: National Park Service

Tallmadge Town Square Historic District in Tallmadge, Ohio

Photo credit: IanManka

Temple Square, c. 1912, in Salt Lake City, Utah

Cunningham Cabin in Jackson Hole, Wyoming

Photo credit: Daniel Mayer