▲If you're planning a trip to Pakistan, Urdu might be a useful language to learn. It's an official language of the country, but be warned: learning Urdu won't be easy!

▲In a category ranked from one to five—one being languages most similar to English and five being languages that are exceptionally difficult for English-speakers to learn—Finnish earns a four, according to Effective Language Learning.

▲This language is almost entirely only spoken by the people of Georgia.

▲This is the most spoken language with roughly a billion Mandarin-speakers in the world, according to Babbel. And it's absolutely one of the hardest to learn!

▲For English-speakers, this is an especially difficult language to learn. Navajo is a verb-centered language and the majority of English adjectives don't even have a direct translation to the Native American language, according to Unbabel.

▲Also getting a score of four on the Effective Language Learning list is the official language of the Philippines, Tagalog.

▲Albanian is spoken officially in Kosovo, Macedonia, and, of course, Albania.

▲If you speak Croatian, then good on you! You know one of the world's most difficult languages.

▲Learning Polish is no walk in the park.

▲Basque is extremely difficult to learn as it is a language isolate, meaning it isn't similar to any other language which makes it that much harder to learn.

▲Not only spoken in Hungary, this difficult language is also heard in Serbia, Romania, Slovakia, and the Ukraine.

▲Hebrew, which is largely spoken in Israel, is quite difficult to learn.

▲Icelandic is an Indo-European language largely influenced by the languages of Danish and Swedish.

▲Persian, also known as Farsi, scored a four on the difficulty ranking list.

▲Finally! A language that gets a score of one on the difficulty ranking list. While still a hard language, Norwegian actually has some similarities to English.

▲Thai has a totally different alphabet, making it extremely hard to learn for English-speakers.

▲Another language with a different alphabet is Vietnamese.

▲Welsh is a Celtic language spoken in Wales.

▲Mutually intelligible to Norwegian is Danish, the official language of Denmark.

▲Indonesian gets a score of three on the difficulty ranking list. The language is spoken in the Southeast Asian country of Indonesia.

▲Part of the difficulty with Arabic is that it's a language that is spoken differently depending on where you are. For example, the Arabic spoken in Morocco is different from the Arabic spoken in Egypt or Saudi Arabia.

▲Along with Mandarin, Cantonese is also spoken throughout China and is an extremely useful (but difficult) language to learn. It is also spoken in Thailand, Malaysia, and Vietnam.

▲Dutch also makes this list. It's spoken in the Netherlands.

▲A daughter language of Dutch is Afrikaans, spoken in South Africa.

▲Korean is also a language isolate. It's hard to learn because of its completely different alphabet and grammatical structure.

▲Also called Scottish Gaelic, it's a Celtic language spoken in Scotland.

▲Finally, Japanese. According to Rype, it can take a whopping 88 weeks to learn this East Asian language, making it one of the more difficult!

See also: Foreign foods English speakers love to mispronounce

▲This language would be useful to learn if you plan on visiting the beautiful European country of Slovenia. Otherwise, very few people outside of Slovenia actually speak Slovenian.

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The sacred language of Hinduism is as beautiful as it is hard to learn.

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According to Ethnologue, there are more than 7,000 languages in the world, with some being more difficult to learn than others. And if you're perhaps a polyglot or linguaphile looking for a new challenge, then maybe learning a bit of Mandarin, Urdu, or even Persian might just be up your alley! Click through this gallery to find out which languages in the world are the most difficult to learn.