The Palacio Real de Madrid — the official residence of the Spanish royal family in the city — is Europe's largest royal palace, boasting a whopping surface area of 135,000 square meters and a staggering 3,418 rooms. This architectural marvel is not only visually stunning, but also features spectacular outdoor gardens and exquisite frescoes, furnishings, and paintings within its walls. Originally constructed in 1764 as a replacement for the Alcázar castle, which had been destroyed by fire three decades earlier, this magnificent edifice is a must-see attraction for visitors to Madrid. Nearly the entire palace is open to the public, including the Armoury and Pharmacy.

For any visit to Kyōto, a stop at Nishiki Market is a must. The over 400-year-old market with its 126 stalls is a foodie haven. All sorts of scents and flavours, from the sweet savouriness of tamagoyaki (the Japanese rolled omelette) to the fried treats, to the acidic tanginess of tsukemono (pickled goods), fill the thriving narrow shopping street. Besides the delicacies, the market is also famous for kitchen paraphernalia and tools, such as the acclaimed hand-crafted knives of Aritsugu. Fun fact: almost all edibles sold here are served on sticks.

Embark on a tour through Houmt Souk, Djerba's main town to get a glimpse of Tunisian life. Begin at the bustling fishing port, where the day's catch unfolds against the backdrop of the Mediterranean. Navigate through lively markets, where the air is filled with the aromas of exotic spices and vibrant textiles. The fascinating 'funduqs' houses, some dating back centuries, stand as architectural treasures. Discover a unique blend of religious diversity as you visit a small church alongside two notable mosques — the Mosque of the Turks and the Mosque of the Strangers.

Even the exterior of Universum Bremen was designed to astound: this science centre is housed in a futuristic-looking structure which looks uncannily like a whale. It is even situated on a lake. Visitors of any age will enjoy getting up close to natural phenomena, such as what it feels like to experience an earthquake, and having a go at experiments, such as stopping lightning bolts. Try out the interactive exhibits as you move through the permanent exhibition spaces dedicated to Technology, Humans and Nature and the ever-changing special exhibitions about socially important topics. There are also many exciting things to discover in the outdoor area at Universum, where you can conduct experiments in the open air.