The Centre Pompidou stands out with its bold, high-tech design — pipes and escalators on the outside make it hard to miss. Inside, you’ll find Europe’s largest modern art museum, a big public library, and a hub for music and sound research. When it was built, many Parisians hated it for clashing with the classic city vibe, and its construction meant knocking down the famous Les Halles market nearby. Now, it’s a lively spot for art lovers and anyone curious about something a bit different.

Standing proudly amid the European-style buildings of Qingdao, it'll be hard to miss St Michael's Cathedral. A German-style Catholic church, it’s the largest Romanesque Revival structure in the province and the only consecrated church in China. Inside, a newly installed organ adds a special touch, played only during Mass.

In the western outskirts of Mumbai, the Kanheri Caves are laid in the middle of the Sanjay Gandhi National Park. Carved out of rock mountains and with a history that dates back to the first century BC, they are existing proof of the Buddhist influence on India. The surrounding forest features an area full of waterfalls and local flora.

One of the major examples of Sicily's unique encounter of architectonic styles, the Palermo Cathedral is the result of centuries of additions, redecoration, and restorations. It was built in 1185 on the site of a former Byzantine church, which was used as a mosque during the 9th century and it encompasses Medieval, Gothic, Arabic, and Neoclassical styles. Climb up to the roof and enjoy a great view of the city.