Rocky Mountain National Park officially turns 100 years old Jan. 26. On this date in 1915, President Woodrow Wilson signed legislation establishing the park. A century ago, the word 鈥榮elfie鈥� didn鈥檛 exist in its current form. But these days lots of people are taking the opportunity to pose in front of park signs commemorating the Centennial.

鈥淭he signs are already very, very photographed with people in front of them 鈥� and even more so now with this great little 鈥�100th鈥� banner on the bottom,鈥� said park spokeswoman Kyle Patterson. 鈥淲e鈥檒l take that off in 2016 鈥� so it鈥檚 a great experience for memories to be made, and to say 鈥業 was there鈥� at the Park鈥檚 100th anniversary.鈥�

In its first year, the park drew 31,000 visitors. Crowds have grown steadily since then, with a record 3.4 million people flocking to Rocky in 2014 -- many of them to help celebrate the park鈥檚 Centennial Anniversary, which kicked off in September.

People from all over are posting fond memories of their visits on Instagram, and 鈥�