begun around 900 c.e., prague castle is a hodgepodge of buildings erected over the centuries.e prince wenceslas lived. yes, he's the same good king wenceslas we sing about during christmas. >> ♪ good king wenceslas looked out on the feast of stephen ♪ >> prague's glory days were during the reign of charles iv. in the 1300s, charles made the city part of the holy roman empire. he also established charles university, the first university in central europe. prague still attracts students from all over. >> it's my favorite city that i've been to in the world. and i love the architecture. i love the culture. i love how efficient public transportation is. >> he's right. getting around prague is easy. from trains to trams to horse-drawn carriages and river boats for sightseers. but most of all, it's a city for walking. there's so much to see and hear. [ small ensemble plays ] and you had better plan on exercise to work off the great food you find around every corner. a particular treat is a tasty pastry called "trdelnik." dough is rolled around a stick, heated, and then dusted with c