The Washington Monument

Let's now work on the nouns. Some have been removed. Can you find them ?
Hi, welcome to, I'm your host Christine. Today, we'll be taking a brief look at the most landmark in Washington DC, the Washington Monument.
The Washington Monument is the most prominent as well as the attractions in Washington DC. It was built in honor of George Washington who led the country to Independence and then became its president. The monument is shaped like an obelisk, five hundred and fifty-five feet and averages thirty to forty miles visibility in weather.
The monument is among the masonry structures, it was designed by Robert Mills, a American architect of the 1840s. The construction of the monument began in 1848, but was not completed until eighteen eighty-four, almost thirty years after the architect's death.
At the time of its construction, it was the tallest building in the world. It is still the building in Washington DC.