The appearances of places and some buildings has changed a lot over the decades. What places looked like years ago are not how they appear today. This could be due to an increase in population, a rise in technology, or both. There are new buildings, bigger streets, and so much more being done to cities worldwide. This means that many major cities, monuments, and other popular sights have altered in appearance slightly or drastically. Some of these places are a little unrecognizable in the past, which is interesting to see.

The huge skyscrapers across New York were once never there and all of the hustle and bustle of major cities did not exist in the past. Some now abandoned places were once popular hangout spots, some relics were once major advancements, now just normal structures. It's cool to see how some of the world's most popular spots looked decades ago.

There are tons of photos online of cities, historical buildings, and other famous sights back in the past compared to now. Here is a collection of 25 side-by-side photos from life in the past showcasing these interesting differences in places then and now.