This coastal town in southwestern Namibia is known for its German colonial buildings, including the art nouveau Goerke Haus, built into the rock face on Diamond Hill. Nearby, Felsenkirche is a hilltop church with panoramic bay views stretching around to Robert Harbor. The Lüderitz Museum has displays about the town’s diamond mining past as well as local and natural history.

This quaint town on the Rhine is the gateway to the Black Forest and lies halfway between Freiburg and Colmar. As you walk the cobblestone streets, stop to sample local schnapps made from fermented pears or cherries and the distinctive smoky ham of this region. St. Stephan's Cathedral perches on a hillside and is the exquisite centerpiece of the town.

Arequipa, known as the "White City," is built from sillar, a pale volcanic stone that glows in the sunlight. This architectural detail gives the historic center its striking appearance and has earned it recognition as a UNESCO World Heritage Site. Towering above the city is the perfectly symmetrical Misti Volcano, which, along with two neighboring peaks, forms a dramatic backdrop.

A medieval little town high above the sea with narrow winding streets, little squares and flower-decked courtyards.

A major port city on the River Scheldt, Antwerp, Belgium, is a cultural, historical, and commercial hub and the country's most populous city. Known as the "diamond capital of the world," Antwerp is renowned for its cut diamonds.