Rick gathers some old friends to hear about their childhood Christmases in Spain, Italy, and New Mexico. Then he brings in more friends to describe what you're likely to find this time of year in Austria, Australia, Japan…and Antarctica. Plus, a Brit from Bath explains how the English tradition of wassailing developed as a way to guarantee a good apple harvest — or at least an occasion to enjoy a warm drink with neighbors.

Old World traditions — fasting, feasting, incense, and song — make Bulgaria's Christmas season special, and tour guide Stefan Bozadzhiev invites us to imagine it with him. Then an Istanbul guide updates us on the latest big news in Turkey's cultural capital, and a culinary historian inspires us to peruse our spice racks as she discusses the often surprising origins of the eight flavors that unite America's diverse cuisines.

Ken Follett, author of a monumental series of novels based in medieval Europe, celebrates the much anticipated — and hotly debated — reopening of Paris' Notre-Dame Cathedral five years after its devastating fire. Also, the New York Times' former Paris correspondent Elaine Sciolino tells us what makes her own Paris neighborhood feel like home. And a peace activist from Jerusalem shares a suggestion to help people of different religions get along better.