Travel links directories are numerous. You may only need to list your sites about beautiful places to few of them.
When doing this job, you need to take time on the travel directory that accepts free or reciprocal links to read and know many facts about it before submitting your beautiful sites or your travel sites.
Some of those travel directories have long URL submission procedures. Some of them also use your URL after submission to benefit more of it by linking it to a second page, where visitors may comment on your beautiful site. Of course, that is not a primary target and they should not implement such job with simple request for a reciprocal link.
If you found such travel directory, skip it even if it has a page rank of 10/10 although there is no travel directory at this page rank.
Some of the travel links directories and other travel link-exchange services have hard terms and conditions that they may not need to apply them with simple travel link swap. They are of course free to do what they like on their travel websites, but I personally would not exchange link there.
You may also discover that some of those travel directories use no-follow attribute with your URL, so why wasting your time and efforts submitting your travel sites or your sites about beautiful places to them?