Zagreb is made for strolling. Wander through the Upper Town's red-roof and cobblestone glory, peppered with church spires. Crane your neck to see the domes and ornate upper-floor frippery of the Lower Town's mash-up of secessionist, neo-baroque and art deco buildings.

Zagreb is made for strolling. Wander through the Upper Town's red-roof and cobblestone glory, peppered with church spires. Crane your neck to see the domes and ornate upper-floor frippery of the Lower Town's mash-up of secessionist, neo-baroque and art deco buildings.

Outspoken, adventurous, proud and audacious: Belgrade is by no means a 'pretty' capital, but its gritty exuberance makes it one of the most happening cities in Europe. While it hurtles towards a brighter future, its chaotic past unfolds before your eyes.

Outspoken, adventurous, proud and audacious: Belgrade is by no means a 'pretty' capital, but its gritty exuberance makes it one of the most happening cities in Europe. While it hurtles towards a brighter future, its chaotic past unfolds before your eyes.

Barcelona is an enchanting seaside city with boundless culture, fabled architecture and a world-class drinking and dining scene. Towering temple columns, ancient city walls and subterranean stone corridors provide a window into Roman-era Barcino.

Barcelona is an enchanting seaside city with boundless culture, fabled architecture and a world-class drinking and dining scene. Towering temple columns, ancient city walls and subterranean stone corridors provide a window into Roman-era Barcino.

Berlin's combo of glamour and grit is bound to mesmerise all those keen to explore its vibrant culture, cutting-edge architecture, fabulous food, intense parties and tangible history. Bismarck and Marx, Einstein and Hitler, JFK and Bowie, they’ve all shaped – and been shaped by – Berlin.

Berlin's combo of glamour and grit is bound to mesmerise all those keen to explore its vibrant culture, cutting-edge architecture, fabulous food, intense parties and tangible history. Bismarck and Marx, Einstein and Hitler, JFK and Bowie, they’ve all shaped – and been shaped by – Berlin.

With equal measures of grunge and grace, Athens is a heady mix of history and edginess. The magnificent Acropolis, visible from almost every part of the city, is the hub around which Athens still revolves.

With equal measures of grunge and grace, Athens is a heady mix of history and edginess. The magnificent Acropolis, visible from almost every part of the city, is the hub around which Athens still revolves.