Healdsburg is a notable destination for wine and food enthusiasts. Sitting at the juncture of three prime wine growing regions — the Russian River Valley, Dry Creek Valley, and Alexander Valley wine appellations — makes this charming town an ideal base for wine tasting, gourmet dining, art galleries and shopping.

Back in the 1970s, Berlin was the home of the legendary David Bowie. Together with a specialist guide, you'll navigate the city on foot and by public transport, discovering the Berlin that inspired David Bowie's seminal Berlin Trilogy. You'll see Hansa Studios, where 'Heroes' and 'Low' were recorded. Stop by 155 Hauptstrasse, where Bowie and Iggy Pop lived and created together in 1977. This tour is an absolute must for all the fans of Ziggy Stardust.

East of Karachi lie the Chaukhandi tombs, a vast Islamic burial ground full of incredibly ornate tombs that date back to somewhere during the 15th through 18th centuries. The sandstone structures are believed to be a burial site for the late Jokhio tribe members.

Portland earned its CNN-recognized title of "home to the world's best street food" thanks to a unique phenomenon: the "food cart pods." These clusters of food trucks and stalls, which enjoy semi-permanent locations and often feature shared dining areas with tables and seats, offer a diverse array of cuisines. With several hundred food carts, you can find everything from classic Americana burgers to Korean-style tacos. Notable food cart pods include those on Fifth and Third Avenues in downtown Portland, as well as the Portland State University campus. Other popular pods are Cartopia and Cartlandia in Southeast Portland, Prost Marketplace in the Northeast, and Killingsworth Station, among several others.