Potosí rises on the Altiplano of southern Bolivia and for centuries it was one of the richest cities in the world because of what lies just beyond its streets. At the foot of Cerro Rico (“Rich Mountain”), silver was discovered in the mid-1500s, and within a few decades the city became a center of mining and wealth that shaped global trade and economies.

Brazil's third largest city, Belo Horizonte was founded in 1897. Most of Brazil's gems and semi-precious stones are mined in this area and it is where you can find the best bargains, from aquamarines to imperial topaz. It is just 59 miles from Brazil's most historic colonial city, Ouro Preto.

Maseru, the capital of Lesotho, sits along the banks of the Caledon River near the border with South Africa. As the political and economic center of the country, it offers a mix of modern amenities, government offices, and bustling markets.

Attractions in Ajloun include the 12th century Saracen Castle built by Saladin in the campaign against the Crusaders.

Warnemunde (or Warnemünde) is a port city in Germany and a frequent stop on many Northern European cruises. Across the Baltic Sea from Denmark's capital, Copenhagen, this charming seaside city has a number of delightful attractions, including the Warnemünde Lighthouse, a variety of local shops along the marina, and surfing lessons on the beach.