Olbia’s top sight is this medieval Pisan-Romanesque church, hewn out of Galluran granite. In the apse, there are two 13th-century frescoes — the left-hand one depicting San Simplicio, the patron saint of Olbia. The Festa di San Simplicio, Olbia’s biggest festival, is celebrated for three days in mid-May.

Kick off your visit to Edinburgh with a visit to the Old Town. With its narrow winding streets, medieval architecture and centuries-old buildings, this charming district is the best place to get a glimpse into the city's rich heritage. Stroll along the famous Royal Mile, a vibrant thoroughfare lined with shops, traditional pubs and historical sites. Explore the hidden 'closes' and alleys that unveil stories of Edinburgh's past, and visit iconic landmarks like the imposing Edinburgh Castle and the beautiful St Giles' Cathedral.

One thing is very clear on the Grossglockner High Alpine Road: "the journey is the reward". It is not about arriving at the top, it's about experiencing the pass road with all its views, places for a stop, display boards and information points. Various huts and restaurants along the road are waiting for your visit. At the Kaiser-Franz-Josef-Höhe you have a unique view, which is dominated by the Grossglockner and the Pasterze, Austria's largest glacier. The hiking trails into the Gamsgrube amidst the special conservation area of the High Tauern National Park affords unique views and sightings of rare alpine animals, such as the majestic ibex and marmots.

Seville Cathedral is the third-largest cathedral in Europe. Originally built as a mosque in the 12th-century, the 100-metre- high minaret is now the Giralda clock tower. Christopher Columbus is buried inside the cathedral.