Maggie has just landed in Mexico, and heads straight for Tulum, a once crucial trading post for the Mayan civilization, with spectacular clifftop ruins.

Annette sharpens her skydiving skills in a vertical wind tunnel in Slovakia. The wind reaches a speed of 180 kilometers per hour (112 mph).

Annette gives us some tips on using yoga moves to give our muscles a break when on a road trip.

Annette takes us on a tour of her conversion van named Hermes, a van that has been, in her case, converted into a living space. In addition to the basics, she has equipped the van with many of the comforts of home.

Annette shows us Salt Lake City's very modern and light-filled public library and takes us up to the roof for a surprise.

Annette talks about the Wild West, and takes us to a famous gold mining town in South Dakota that was an important part of United States history.

Annette visits the Erickson Aircraft Collection in Madras, Oregon. A highlight of the collection is a plane that appeared in a very famous movie.

Annette visits a large museum devoted to motorbikes in Iowa. The collection includes not only motorcycles, but also fascinating memorabilia.

Sigrid traveled back to the U.S. recently to visit her family. She talks about her trip and takes some "detours" to share what she learned about some of the places she visited. She also happened to go to Mexico, where she shot this introductory segment.

Sigrid describes the first part of her trip from Long Island to New Jersey, taking a moment to tell us about the famous Verrazzano Narrows Bridge.

Sigrid seeks to answer the question "What's a borough?" In doing so, she talks about how New York City got its start, and also about the surrounding counties that played an important role in its development. In this video, you'll see 18th- and 19th-century maps of the area.

The Bronx was the first area to become part of New York City. Lying to the north and northeast of Manhattan, it was a logical addition. The quirky name of this borough has its own history.

The borough of the Bronx has gotten a bad name because of issues with poverty and crime. It's also had its share of neglect and mishandling on the part of local and state administrations. However, the Bronx also has some claims to fame, such as the Bronx zoo and botanical garden.

In the first of two parts, we look at Brooklyn's beginnings and how it came to be one of New York City's boroughs.

Sigrid talks about the different ways to get from Brooklyn to Manhattan, and about some of the characteristics of this borough. For one thing, it is more affordable than Manhattan, although by no means a cheap place to live.