One fun thing that happens in New York is that as buildings get torn down, old advertising sign are exposed. These are commonly called ghost signs, advertising businesses that no longer exist. And they offer clues to their age, but I won’t give their secret away.
Desert View Watchtower, Grand Canyon National Park, Arizona
A visit to the Desert View Watchtower on the eastern portion of the Grand Canyon’s South Rim. Constructed in the 1930s, it offers magnificent canyon views and a tie to the Native American history of the Canyon.