The 2015 Palm Sunday Mass at the Vatican can be viewed through a link at IBTimes.com, or by searching the Vatican's You Tube channel. Various American Catholic churches have videos of their Palm Sunday Mass as well, and one can also be found at TheSundayMass.org.
For those who wish to view a live Palm Sunday mass, SaintPatricksCathedral.org, the website of the large New York City church, has live streaming of its Sunday mass and videos of past services. The Cathedral of Our Lady of Angels in California, also offers online live video streaming of its mass services. For more information on the Catholic observance of Palm Sunday, Catholic.org is a website that offers written information and explains some of the traditional observance practices of Palm Sunday in various countries.