Describes the planning and building of the Panama Canal.

Describes how medieval castles were built and examines the daily lives of those inhabiting them.

Discusses the history, construction, and possible purposes of Stonehenge.

Discusses the history of the transcontinental railroad, including the construction of the Central Pacific, Union Pacific, and other related railroads which joined the east and west coasts by meeting at Promontory Point, Utah.

Discusses the architectural features and cultural influences that contributed to the building of medieval cathedrals, and which have set them apart as unique and timeless structures. Also includes a chronology highlighting historically important dates.

Discusses the history of Moscow's Kremlin. For more than eight hundred years, the Kremlin has stood as the guardian of Moscow; home to kings, queens, dictators, and presidents, the Kremlin today houses Russia's great historical and art treasures, while also serving as the center of the Russian government.

Discusses the history and development, technological and political challenges, and future of the world's first reusable space vehicle, including the shuttle program's effects on NASA.

Discusses the history and construction of the massive World Trade Center, daily operations, and the tragic events of September 11, 2001.

Describes the ancient Incan city of Mach Picchu, the ruins of which show the religious beliefs, masterful stonework, wise use of natural resources, and history of the people who ruled the largest indigenous empire of the Americas.