Visit Gamla Stan in Stockholm

Fairytale medieval walled city, UNESCO-listed.

Hanseatic gables, the House of the Blackheads and St Peter’s spire, ringed by Europe’s finest Art Nouveau streets.

Visit Stockholm, Sweden's capital spread across 14 islands. Explore the Vasa Museum (home to the remarkably preserved 17th-century warship that sank on its maiden voyage), stroll through Gamla Stan (the medieval old town with cobblestone streets and the Royal Palace), and see the modern art at Fotografiska (a photography museum in a former customs house with panoramic views).

Moorish palace-fortress of Granada.

Fifteenth-century royal complex at the heart of Baku’s walled old city.

The grandest of Seoul’s five Joseon palaces, with a changing-of-the-guard ceremony and hanbok rental for free entry.

Beijing's vast imperial palace complex.

The Thai kings’ glittering palace complex and the Emerald Buddha, all gold spires and mirrored mosaic.