Schedule for Modern Marvels Presented by History

Modern Marvels

Modern Marvels

The world's largest concrete dam, and the largest concrete structure in the world, lies on the Columbia River in the State of Washington built in 1931, it is also one of the largest hydroelectric power plants in the world.

2026-07-10 10:50:00 +0000 UTC2026-07-10 11:43:00 +0000 UTC(53m)