Mammoth Cave National Park in Kentucky includes the most extensive cave system known in the world. More than 367 miles of cave passageways have been mapped, and there may be more miles still uncharted. The …
Landmarks
The Liberty Bell
The Liberty Bell in Philadelphia, Pennsylvania is a familiar symbol of independence, freedom, and justice in America. Originally called the State House Bell, it was commissioned in 1751 by colonial representatives. The bell has been …
Olvera Street: A Taste of Old Mexico
Olvera Street, or La Placita Olvera, is the quaint birthplace of modern Los Angeles. This block-long street has now been restored to an old-fashioned marketplace and plaza reminiscent of early Mexico. The street and plaza …