Houston, the fourth-largest city in the U.S., is known for its iconic NASA center, the world-renowned Texas Medical Center, and its lively annual rodeo. But in recent years, the city has evolved into a must-visit destination for the savvy traveler. With a vibrant mix of cultures—no one ethnicity holds the majority—Houston boasts an eclectic blend of top-notch cuisine, world-class culture, exciting entertainment, and unbeatable shopping.

Olbia is the gateway to the pearly white beaches of Sardinia's northeast coast and the sparkling Costa Smeralda. This is where jet-setters, film stars and the ‘glitterati’ arrive to indulge in 'la dolce vita' Sardinian-style. With a Greek name meaning ‘happy’, Olbia used to be a little fishing village but has now grown to become Sardinia’s busiest ferry port, complete with an international airport and tourist amenities. The countryside is cloaked in aromatic wild herbs, the macchia, and the surrounding sea glows in every hue of electric blue, in a little known and exclusive place waiting to be discovered.

The Elbe River, lakes and canals, the historic Town Hall, the UNESCO World Heritage Site Speicherstadt and Kontorhaus District with Chilehaus, the nightlife on the famous Reeperbahn and the traditional Hamburg fish market shape the image of Hamburg, Germany’s green city on the waterfront. The HafenCity offers modern architecture and the new landmark, the concert hall Elbphilharmonie. In Hamburg — Germany's second biggest city — prestige, elegance and creativity are combined to create an edgy, modern vibe.

Zaragoza, the capital of Spain's Aragon region, has a privileged location, equally distanced from Madrid, Barcelona, Valencia and Bilbao. The city is connected by an international airport and a high-speed railway line (AVE). Visitors can expect a delicious gastronomy and a rich heritage of historical monuments: Basilica del Pilar, Cathedral of San Salvador, Aljafería Palace, the paintings of Goya or the Mudejar–UNESCO Heritage of Mankind. Local architecture combines Islamic and Gothic styles — an absolute must-see.

Not without reason, Durham is regarded as a historical city with a fascinating history. With its numerous Heritage sites, Durham is considered, by many, the spiritual capital of northern England as well as one of its most beautiful and unspoilt medieval centres. The medieval city sits atop a craggy hill encircled on three sides by the River Wear. Its panoramic view of the Cathedral and Castle is a relic of the Norman conquest and described as ‘one of the finest architectural experiences of Europe’.