The Washington Monument is the world's tallest stone structure and obelisk.
The Zero Milestone is a large, white stone monument in Washington, D.C.
The Butt-Millet Memorial Fountain is a neoclassical structure located near the White House.
The Columbus Obelisk is an enduring structure dedicated to Christopher Columbus.
The Dauphin County Veteran's Memorial Obelisk is a tall, slender monument rising above Harrisburg.
The Newkirk Viaduct Monument is an obelisk-shaped structure commemorating the construction of the first railroad into Philadelphia.