Leaving behind the unique glitz of Las Vegas, after just a 40-50 minute drive, the Hoover Dam appears.

Perhaps because it offers a completely different landscape from the city's splendor, the Hoover Dam tour is a popular choice for those visiting Vegas as a day trip. I have followed that common tourist route, and it was much more impressive than I expected.

As you depart from Vegas, the skyline of the city gradually shrinks, and the red desert terrain unfolds on both sides of the road.

The sky is endlessly wide, and while the sunlight is strong, it is dry and refreshing. Before long, after passing through a security checkpoint resembling a customs station, you enter the vicinity of the Hoover Dam.

From this moment, the scenery changes dramatically. A massive concrete structure is nestled between towering cliffs, and it is hard to believe that this was built nearly 100 years ago in the 1930s.

Just like the skyscrapers of New York and the transcontinental railroad bridges... the phrase about the totality of American technology and labor at that time is not without reason.

There are mainly two ways to take the tour. One is a self-guided tour where you only view the scenery from above the dam, and the other is a guided tour that goes inside.

If time allows, I would highly recommend the internal tour. Taking the elevator down to the deep underground power facilities, you will see enormous turbines lined up, and the concrete walls bear the grand traces of construction.

The inside of the dam is quite cool, making you momentarily forget that you are in the middle of the desert. The guide shares fascinating stories about how many workers were mobilized to construct the dam, what technologies were used, and the scale of civil engineering at that time.

From the viewpoint above the dam, you can clearly see the Colorado River flowing in a shade of blue. When the wind blows strongly, you have to hold onto your hat, but that coolness creates the unique atmosphere of the Hoover Dam.

On one side is Arizona, and on the other is Nevada, so there is also the fun of standing on two states at once from the top of the dam. Those who love taking commemorative photos will definitely look for the line that marks this boundary.

Another must-see spot is the 'Mike O'Callaghan-Pat Tillman Memorial Bridge.' The view of the Hoover Dam from this bridge is truly overwhelming. The dam's massive curves, the surface of the Colorado River, and the red rocks of the desert all come into one frame, which cannot be captured in a photo. A short walk up from the parking lot leads you directly to the viewpoint, which is unmatched for overlooking the entire dam.

By the time you finish the Hoover Dam tour and head back to Vegas, you can't help but think, "Was that really made by humans?" It feels like a strange contrast between the artificial splendor of Vegas and a different kind of human ingenuity, along with the scale of nature surrounding it.

It was a perfect day trip, a wonderful experience to momentarily escape the hustle and bustle of Vegas and face the ambitious civil engineering project from the Great Depression era in America.