When the tide recedes, mud flats are exposed allowing you to walk between islands. Trekking across the Wadden Sea is so evocative that it has even got its own verb, Wattwanderungen (mudflat hiking). However, in order to avoid the quicksands and the tides, you must go with a guide.

In the year 64 AD, Emperor Nero built a palace almost one mile long — stretching from Palatine Hill all the way to Oppio Hill. Some parts were covered in gold, precious stones and featured splendid decor. After Nero’s death, it was filled in with earth to obliterate the tyrant’s memory. It was accidentally rediscovered in the 15th century, and today, you can walk through 30 of Nero’s 150 underground rooms.

Hang gliding really is one of the best experiences the city has to offer. Take a flight from one of the many hills surrounding Rio de Janeiro and glide smoothly through the gentle Brazilian wind. There are different companies offering hang gliding in Rio de Janeiro, and even if the place of departure may change, all routes fly over the most important sights and attractions of the city.

Named after the nearby Embassy of Spain, the Spanish Steps link Piazza di Spagna with Piazza di Trinità dei Monti. The monumental stairway is famous for being a gathering point for both tourists and locals who grab a front-row seat to the spectacle of Rome's street life after an exhausting day of shopping or sightseeing. During spring, the Spanish Steps bloom with azalea flowers, making it one of the most photogenic attractions in Rome. The steps became famous all around the world thanks, in part, to Audrey Hepburn's film "Roman Holiday" and Bob Dylan's song "When I Paint My Masterpiece".