Naples, Italy, is known as the birthplace of what is arguably the world's most recognizable dish — pizza. But only 3,000 pizza bakers are officially recognized Pizzaiuoli, and can use the traditional wood-fired oven and dough preparation techniques.

Yoga is not only physical exercise, but a mental and spiritual one as well. Yoga originated in India in the fifth century BC, and is used to "help individuals build self-realization, ease any suffering they may be experiencing and allow for a state of liberation." Yoga came to the attention of Western cultures in the mid 19th century and is now practiced all around the world.

Falconry, the art of training falcons, was originally used as "a method of obtaining food," but has since evolved into a method of social engagement and nature conservation. It's a widespread practice, and UNESCO lists it as intangible cultural heritage for 18 countries in the Middle East, Asia and Europe.

Arabic coffee has played a cultural role in the Middle East, the birthplace of the coffee house. The drink is served strong, in small cups, sometimes with cardamom but never with sugar. The English word coffee comes from the Dutch kofffie, which itself is a transliteration of the Arabic "qahwa."

Tango developed from European, African and Native American dancing traditions in the 1880s along the border between Argentina and Uruguay. The partner dance, which has become hugely popular around the world, was banned in Argentina during the military dictatorship of the late 20th century, but has flourished since the return of democracy in 1983.

Vienna's Spanish Riding School was added to UNESCO's list in 2015. Named for the Spanish horses that formed the base of the riding hall's Lipizzan breed, the school was first formed by the Hapsburg monarchy in 1572. The oldest of its kind in the world, the school's performances of classical dressage continue to bring in large crowds more than 450 years after its founding.

Despite its small size, Belgium produces nearly 1,500 different types of beer. Some of the most popular are produced by Trappist monks, who donate their profits to charity. Beer is such a part of everyday life in Belgium that up until the 1960s, beer was an option at school lunches.

Known for its elaborate make-up and stylized drama, Kabuki theatre originated in 17th century Japan and was originally performed only by women. Kabuki plays follow one of three categories — history, domestic tales, and dance pieces. The word kabuki can be roughly translated to "avant-garde."

Some can't bring themselves to take a single bite. Due to the putrid stench, manufacturers advise that cans of Surströmming should only be opened underwater. The stinking Swedish fish ferments for weeks — a process that continues in the can, which bulges noticeably on the supermarket shelve. Allegedly, some airlines even prohibit the rotten fish on planes due to the risk of explosion.

The Greenland shark can grow up to 400 years old. Unless it ends up as hákarl on a plate. While the shark's meat is actually poisonous when fresh, it becomes edible if you bury it or let it rot in a box for weeks. Dubbed by some the worst tasting food in the world, hákarl has a rubbery consistency and an ammonia-like flavor. It's a traditional specialty in Iceland.

Once they were a delicacy in Central Europe, but today bull testicles are only savored by experimental gourmands and very rarely appear on menus — or as in this photo, hidden in a salad. Which might be a pity, as connoisseurs describe the dish's very delicate consistency and a subtle nutty taste. In addition, bull testicles (known as Rocky Mountain oysters in the US) are rumored to boost libido.

The ingredients of this mariner's dish from Northern Germany are harmless: potatoes, beetroot, meat and fish. But after they are put through a meat grinder, it comes out looking like someone has just been sick. Labskaus is therefore often hidden under a fried egg. The specialty was born out of necessity — as sailors once lost their teeth due to vitamin deficiencies, their food had to be pureed.

A specialty on the Italian island of Sardinia, where it's known as Casu Marzu or "rotten cheese," flies lay eggs in the immature sheep's cheese before it becomes infested with live larvae, or maggots — which gives the cheese its incomparable taste. Though the delicacy is officially banned in the EU, many Sardinians do not want to give up this uniquely putrid pecorino cheese.