"The city in its setting and entire surroundings may be said to have something ideal." (Johann Wolfgang von Goethe, 1797). Scarcely any other European city has had its praises so often sung as Heidelberg. The mysterious Heidelberg Castle, the picturesque Old Town, and as Goethe himself stated, the perfection of its setting – in the nineteenth century, all of this attracted the German romanticists, who immortalized Heidelberg in poetry, music, and art. Today the charm of Old Heidelberg is combined with a future-oriented and international focus.

Unjustly overlooked by travellers en route to Tunisia's celebrated seaside resorts, the nation's capital certainly deserves more than just a quick glance through the shuttle bus window. The city lives and breathes history, from the crumbling columns of Carthage to Medina's labyrinthine alleys, where the scent of orange blossom mingles with freshly baked tabouna bread. This is where Roman mosaics, Ottoman arches and mid-century modernism collide with unshowy authenticity.

For more than one billion people worldwide, Mecca is the holiest site, revered as the birthplace of Prophet Muhammad and the city where the revelation occurred. Because of its profound religious significance, millions of pilgrims journey here every year from all corners of the globe, making Mecca one of the most culturally and ethnically diverse cities in the Muslim world — a true melting pot of peoples and cultures. Remember, that this holiest of cities, known as “Makkah”, is only accessible to Muslims.

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.