From Muppet Wiki

In the early 90's, Big Bird starred in a series of Sesame Street segments in which he traveled to a different part of the United States and learned about people of different ethnicities and participated in their cultural activities or pastimes. Each segment begins with graphics of a postcard, addressed to "Sesame Street, USA," which reads "Wish you were here! --Big Bird". In some respects, the segments served as a precursor to Global Grover.

In a departure from the norm, Miles and Gabi were featured in one segment, in which they visited the Kennedy Space Center. This segment was seen in a few of the episodes which focused on Slimey's journey to the moon.