Drupal's LogoDrupal is a leading multipurpose CMS software, not only aimed to be blog CMS, Drupal can be utilized to do many things, which prevalent website supposed to do. One of it is Image Galleries.
Do these steps to make Image Galleries with Drupal

  1. Install drupal on your web server
  2. Download Image module from drupal’s project page
  3. Unarchive the .tar.gz file
  4. Upload it into your modules folder in web server
  5. Login as the administrator, enable the module
  6. Create categories using taxonomy
  7. You can start create image content