In 1827, Joseph Nicephore Niepce created history when he took the world’s first photographic image. His photographs (a term that is derived from the Greek words "photos" (light) and "graphein" (to draw)) were the basis by which photographs today are taken. And because of that fateful day, photographs have become and remained an integral part of our lives. Imagine taking a vacation without having images to look back on and remember all the times you enjoyed when taking your sightseeing tour. Like you, millions of people can’t imagine taking a tour without snapping a few photos.

Recently, a team of researchers at Cornell went through 35 million (!) pictures taken by more than 300,000 photographers on Flickr in order to determine the most photographed spots on the planet. Check out the top five below to see if you’ve had a chance to take a package tour to one of these spots to take some images of your own:

New York City – Perhaps no surprise to anyone that’s taken a sightseeing city tour of The Big Apple, New York City ranks as the most photographed city on the planet. With such places to visit such as The Statue of Liberty, Ground Zero, Times Square and more, New York City tours provide a multitude of opportunities for vacationers to snap more than enough photographs to provide countless memories.

London – Featuring Big Ben, Westminster Abbey, Trafalgar Square (the second-most photographed landmark on the planet), the House of Parliament, the River Thames and other great landmarks, London tours are great places to not only visit, but also snap photos to share with all of your friends and family that were unable to join you on your trip.

San Francisco – Home of some of the best seafood on the planet, San Francisco places third on the list of most-photographed cities. Mention "San Francisco" and the Golden Gate Bridge may come to mind, or perhaps you’ll think of Alcatraz or Pier 39. Whichever of these may stick out in your mind, rest assured that sightseeing tours of San Francisco provide an endless number of photograph opportunities.

Paris – Home of the Eiffel Tower (the most photographed landmark on the list) and Notre Dame (the fifth-most photographed landmark on the planet), Paris places fourth on the list of most-photographed cities on the planet. Tours of Paris are some of the most popular anywhere with people from all over coming to this European city in order to see its historic landmarks, fashionable clothing lines and of course, to sample the fine cuisines the city has to offer!

Los Angeles – Placing fifth is Los Angeles. The City of Angels is home to Hollywood, numerous theme parks, beaches and more that are prime locations for anyone looking to snap some photos. Sightseeing tours of Los Angeles provide ample photograph opportunities for anyone that enjoys taking photos.

Rounding out the top-25 cities on the list are Chicago, Washington, D.C., Seattle, Rome, Amsterdam, Boston, Barcelona, San Diego, Berlin, Las Vegas, Florence, Toronto, Milan, Vancouver, Madrid, Philadelphia, Austin, Dublin and Portland. Is there a city missing from this list? Make sure to take a package tour of the city and take lots of photos in order to help establish a spot for it on this list. And while you’re at it, upload your images to Tours4Fun’s Summer Photo Contest and see how you can win some great prizes by sharing your images with us today!