Let’s go back in time. How about a couple years, one decade, several decades — enough to make us notice those details that define what the world used to look like and compare it to what we experience now.

We’d like to take this journey through the past with your photos on Flickr every Thursday. Whether it’s an antique you shot recently or an archived family portrait or maybe a dusty vacation slide you found time to scan, the pictures you share will piece together a weekly history montage that we’ll showcase here on our blog.

To join this series, tweet @flickr with your favorite photos, and include the hashtag #ThrowbackThursday. And if you’d rather not tweet, simply include the same hashtag in your Flickr photo title, or tag it with ThrowbackThursday. We look forward to seeing your contributions.

Here’s a photo selection to inspire some throwback ideas: