A person who explores an unfamiliar area is known as an explorer or as an adventurer
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 an explorer in  a simple language is a person who explores each and every thing he goes to many cities or states or countries and explores their food ,their culture and their clothing. in another word he is an adventurer. he can also be known as a rambler,traveller ,etc.
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an explorer is someone who tries to gather knowledge about everything by visiting different places, reading books and inscriptions and so on..
One that explores, especially one that explores a geographic area.
2. An implement or a tool used for exploring; a probe.
3. Explorer A person aged 14-20 who is a participant in the exploring program of the Boy Scouts of America.