If the comment field contains three dots ('...'), the comment after the three dots is displayed at the bottom of the slide image if the 'More info' link, here 'More info...', is clicked.
The comment for the first image starts with: Library ...The architect has tried to counteract the rigorous design of the former Town Hall, which is oblique with this playful building. The extended comment can't be displayed on the index page
After reading the extended comment you go back to the large slide image via the '<< Less info' link.
The text of both links can be defined at the Skin settings - Slide page / Layout tab of the skin setings.