Travel Channel is expanding its 2015 programming slate with the addition of four new original series, two one-hour specials and two pilots featuring Samantha Brown. In addition, Time Traveling With Brian Unger (formerly The Brian Unger Project) has been upped to 13 episodes from the original six episodes announced earlier this year. The network is expanding its popular Bizarre Foods franchise with Bizarre Foods: Delicious Destinations with Andrew Zimmern. It also has greenlit Breaking Borders featuring Peabody Award-winning correspondent Mariana van Zeller and chef Michael Voltoggio; Guiding Alaska, chronicling an adventurous season at a wilderness resort; and Watt’s World, hosted by Emmy Award-winning reporter and journalist Nick Watt. Also scheduled: one-hour specials The Trip, focused on the Hawaiian islands, and Travel Channel Star, the finale to the year-long quest to uncover Travel Channel’s next person, couple or group whose thirst for travel and adventure stands out from the rest.