Hoover Dam is considered a modern civil engineering wonder and is a National Historic Landmark. The visitors center is open 363 days a year and two guided tours of the dam are available: a 30-minute Powerplant Tour and a 60-minute Dam Tour. Tours include media presentations, exhibits, and commentary by guides that serve to educate visitors about the dam's features and operations, while the Dam Tour even includes exploring passages within the dam itself. For visitors planning to both take a tour and look around the structure, it's recommended to plan for at least 2 hours on site. Hoover Dam is a 35 minutes day trip from Las Vegas (35.8 mi) via I-11 S:


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