Below are links to galleries of Sydney on the Google Photos website.

On each page is a little circle button with a plus sign. Click this to add the shared gallery to your Google account, making it easier to access later. You probably have to have a Google or Gmail account for this bookmarking part to work.

The easiest way to download all the photos in a gallery is to click the button with three dots at the top of the page, and then click "download all."

There are also options to download one photo (or a few photos) by clicking the little blue checkmarks on individual photos before clicking the button with three dots, then "download."