“When in Rome, do as the Romans do.” This is a popular saying among travelers. In each of their destinations, they try to adopt local customs and beliefs so they won’t offend anyone. But in each new travel destination, it may be even more important to observe what the locals aren’t dong. Here is a list of some of the things you want to avoid:

Dating a Local in Iran

Iran is one of those countries in which dating a Muslim woman if you don’t share the same faith is illegal. The reverse is true for men as well. It is illegal for Muslim men and women in Iran to maintain relationships with non-Muslim partner.

Showing Affection in Dubai

You would think that with all the architectural marvels and technological innovation going on in Dubai, the country would have an open mindset. Technically though, it is illegal to show affection in Dubai. Two British beachgoers were confident enough to hold hands and found themselves in the center of a cultural war.

Smoking in Bhutan

This Himalayan country punishes smokers. If you’re a smoking addict, better stay away from Bhutan. You’ll be fined 100% tax at customs by simply bringing tobacco. Also, you’ll be fined $225 if you smoke in public.

Vandalizing in Singapore

Singapore is known as a fine city. That is, every mistake you make will cost you a certain “fine”. Littering, chewing gum, jaywalking, and leaving the toilet unlashed, these are just some of the things you should avoid. The charges above are pretty minor compared to vandalism. Michael Fay, an 18-year old American, tried to test his luck. He spray painted some cars and ended up fined, jailed, and punished with four strokes of cane.

Disparaging Royalty in Thailand

Thais take their monarchy seriously, to the degree that insulting any member of the royal family in any way constitutes severe punishment. Take the example of Oliver Jufer, a 57-year old Swiss national who defaced the portrait of a Thai king after drinking. He was sentenced to 10 years in prison (out of the maximum 75) for his actions. But he was forgiven by the affronted king and he didn’t really serve his sentence.