From the Eiffel Tower's first colors to the original Penn Station, explore how iconic landmarks worldwide looked in the past ...

In this article, we will talk about the 20 states with the most national historic landmarks in the US. You can also take a look at the 25 Most Futuristic Cities in the US. Different buildings, museums ...

Editor's note: This story has been edited for clarity on certain rules and designations regarding historic monuments in Louisville. Louisville is home to dozens of landmarks, but how does the city ...