Construction of this memorial to the 16th President of the United States started in 1914 and was completed in 1922.

• Lincoln Memorial, Washington, DC

• Cliff Palace, Mesa Verde, Colorado

• Mount Rushmore, South Dakota

• Mount Vernon, Alexandria, VA

The largest of its kind, this dwelling was built by the Ancestral Puebloans around 1200. It has 150 rooms and had a population of approximately 100 people.

• Lincoln Memorial, Washington, DC

• Cliff Palace, Mesa Verde, Colorado

• Mount Rushmore, South Dakota

• Mount Vernon, Alexandria, VA

This memorial features 60-foot sculptures of the heads of four United States presidents: George Washington, Thomas Jefferson, Theodore Roosevelt , and Abraham Lincoln.

• Lincoln Memorial, Washington, DC

• Cliff Palace, Mesa Verde, Colorado

• Mount Rushmore, South Dakota

• Mount Vernon, Alexandria, VA

This plantation house was the residence of George Washington, the first President of the United States, and his wife, Martha Washington. It is also where they are now buried.

• Lincoln Memorial, Washington, DC

• Cliff Palace, Mesa Verde, Colorado

• Mount Rushmore, South Dakota

• Mount Vernon, Alexandria, VA

The names of more than 58,000 American veterans who lost their lives in the war are etched in the wall.

• Vietnam War Veterans Memorial, Washington, DC

• Arlington National Cemetery, Arlington, VA

• World War II Memorial, Washington, DC

• The Pentagon, Arlington, Virginia

In 1864, this location became a military cemetery. More than 240,000 military service members and their dependents are buried there.

• Vietnam War Veterans Memorial, Washington, DC

• Arlington National Cemetery, Arlington, VA

• World War II Memorial, Washington, DC

• The Pentagon, Arlington, Virginia

This memorial is dedicated to Americans who served in the armed forces and as civilians during World War II. It was completed in 2004.

• Vietnam War Veterans Memorial, Washington, DC

• Arlington National Cemetery, Arlington, VA

• World War II Memorial, Washington, DC

• The Pentagon, Arlington, Virginia

Since World War II, this is the headquarters of the United States Department of Defense, located across the Potomac River from Washington, D.C. It is a symbol of the U.S. military.

• Vietnam War Veterans Memorial, Washington, DC

• Arlington National Cemetery, Arlington, VA

• World War II Memorial, Washington, DC

• The Pentagon, Arlington, Virginia

Dedicated to the first president of the United States, this monument opened to the public in 1888. The tapered shaft, or obelisk, is made of stone and is covered with white marble. The monument stands just over 555 feet.

• Washington Monument, Washington, DC

• The Gateway Arch, St. Louis, Missouri

• Space Needle, Seattle, Washington (state)

• Jefferson Memorial, Washington, DC

This 630-foot steel monument in St. Louis, Missouri, is the tallest man-made monument in the Western Hemisphere. Built as a monument to the westward expansion of the United States, it is officially dedicated to the American people.

• Washington Monument, Washington, DC

• The Gateway Arch, St. Louis, Missouri

• Space Needle, Seattle, Washington (state)

• Jefferson Memorial, Washington, DC