« Previous
Next »
Subject (Region)
- Great Lakes[remove]87
- District of Columbia75
- Washington Aqueduct (District of Columbia)63
- Mississippi River61
- Washington Monument29
- White House21
- Alaska Territory (1912-1959)19
- United States18
- California16
- Niagara Falls15
- Yellowstone National Park15
- New York Harbor11
- Aqueduct Bridge (Potomac River)7
- Hawaii Territory (1898-1959)7
- Missouri River6
- Mount Rainier National Park (Washington)4
- Potomac River4
- Dalecarlia Reservoir (District of Columbia)3
- Panama Canal (Panama)3
- Erie Canal (New York)2