From exhibitions on ingredients and spices to items such as a sausage-shaped sofa, the Deutsches Currywurst Museum (Schützenstraße 70 10117 Berlin; phone +49 30 88718647, www.currywurstmuseum.de/en) has a number of playful exhibitions about the popular German sausage currywurst. €11 adult, €7 senior/student, and free for children under six.

Out of Guatemala City, there’s a popular half-day trip 30 kilometers south to Volcan Pacaya, an active volcano with trails open to the public. After a two-hour steep hike, visitors can get very close to lava flows and roast marshmallows over hot rocks.

Leaving at 6 a.m. or 2 p.m., tours with guides are recommended and are easily arranged for $15-$20 per person at hotels and travel agencies in Antigua or Guatemala City. The trailhead begins at Pacaya National Park’s visitor center in...

United Airlines is offering an introductory annual subscription rate of $249 for its new “Premier Baggage” program, which allows subscribers and up to eight traveling companions (traveling on the same confirmation number) to check up to two bags each at no additional charge on domestic and international United- and United Express-operated flights for a one-year period. (Flights operated by another airline and connecting onto a United or United Express flight are subject to the standard fees...