To add a link to the description, use the <a> tag and href attribute in the text in your CSV file, or simply add it interactively to the picture caption text.

Use target=”_blank” to open the link in a new tab or window, rather than opening the link in the same tab and leaving the current stop in the Map Tour. You can also apply formatting such as font size and color to your link. Here’s an example caption which creates a pink link and opens it in a new tab or window:

A map tour of historic locations and places of interest in Redlands, California.
Click the arrow to advance to the next tour location, or click a thumbnail or
location on the map for more information. <a href="http://www.rahs.org/"
style="color:#f8d9dc" target="_blank">Redlands Area Historical Society</a>