The capital of the Czech Republic, Prague is the best-preserved Baroque city in Central Europe. We experience its massive castle, beloved statue-lined bridge, evocative Jewish Quarter, and thrilling 20th-century history while enjoying its infectious love of music and perhaps the best beer in Europe. With a beautifully preserved Old Town, Prague deserves its nickname: the Golden City of a Hundred Spires.

International culinary icon Martin Yan returns to public television with a new series that explores the bustling cities, breathtaking landscapes, colorful history and authentic cuisine of Vietnam. Behind every creative Vietnamese dish is a creative Vietnamese chef. Some are award-winning professionals with years of international experience, while others are young rising stars. In the first episode, Martin cooks with a few of these chefs and shares ideas on Vietnamese cuisine. Recipes: Duck with Tea Sauce, Orange-flavored Duck, My Long Noodle, Dungeness Crab with Tamarind Sauce.

In the heart of the Antarctic Peninsula there’s a post office surrounded by jaw-dropping scenery and 3,000 gentoo penguins. Every summer, as staff put stamps on postcards, the penguins return from their fishing grounds to their breeding grounds, trek nearly two miles across sea ice and snow, rush to find a partner, build a nest, lay eggs and protect them from predators, and finally get down to the task of raising their young. Watch their four-month drama unfold as cruise ships come and go, bringing tourists to buy postcards and photograph penguins – the backdrop to the penguins’ lives.

Season 15 features 51 all-new recipes! In this episode, test cook Dan Souza uncovers the secrets to the Best Chicken Stew. Next, equipment expert Adam Ried reviews 13 by 9-inch metal baking pans in the Equipment Corner. Then, test cook Bridget Lancaster shows host Christopher Kimball how to make the ultimate Cream Cheese Brownies.

San Diego has long been known as a hotbed of great musical talent. What’s more, San Diego is home to one of the best music venues on the West Coast. Since 1974, the Belly Up has been featuring great local bands from the Cedros Design District. This episode features Donavon Frankenreiter and his full quiver of songs from beachy acoustic to rippin' 1970s sounding electric guitar songs.

By the time he died in 1931, Thomas Alva Edison was one of the most famous men in the world. The holder of more patents than any other inventor in history, Edison had amassed a fortune and achieved glory as the genius behind such revolutionary inventions as sound recording, motion pictures, and electric light.

At Philadelphia’s Franklin Institute, a team of genealogists uncovers fascinating family histories. A man learns that the event that drove his family to the City of Brotherly Love changed the course of history; a man may be a Viking descendant; another family could have part of one of history’s biggest scams; a young man hopes to confirm his relation to a signer of the Declaration of Independence; and two sisters learn their ancestors were part of the great Irish migration.

A PATH APPEARS, from the creative team behind the groundbreaking series HALF THE SKY: TURNING OPPRESSION INTO OPPORTUNITY FOR WOMEN WORLDWIDE, follows authors/reporters Nicholas Kristof and Sheryl WuDunn, and celebrity activists Malin Akerman, Mia Farrow, Ronan Farrow, Jennifer Garner, Regina Hall, Ashley Judd, Blake Lively, Eva Longoria and Alfre Woodard to Colombia, Haiti, Kenya and throughout the United States. They explore the roots of gender inequality, the devastating impact of poverty and the ripple effects that follow — including sex trafficking, teen pregnancy, gender-based violence and child slavery. In their travels, they meet with inspiring activists who are creating effective solutions to gender-based oppression, transforming lives and providing a roadmap for sustainable change.

Did you say Food Garden? Sounds like a perfect place for host Jorge Meraz. A literal garden of wonderful meals, in a gourmet food court, is waiting for Jorge to taste every last dish. Next we go to the Tijuana Tequila Expo. This is an annual event that showcases a traditional Mexican drink. Jorge does some tasting research, and falls in love with some of the sweet mixed versions.

Highlights include a spinning wheel gifted to the owner’s mother by Mahatma Gandhi, now valued at $50,000 to $75,000; a pin designed by pop artist Roy Lichtenstein that features his trademark Ben-Day dot pattern; and a diamond and platinum Van Cleef and Arpels necklace that was custom ordered for $5,700 by the owner’s father-in-law and is now worth $125,000.