A dwelling or building whose conventional appearance makes it a safe or inconspicuous place for hiding, taking refuge, or carrying on clandestine activities

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Note added at 45 mins (2010-08-21 13:51:36 GMT)
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http://www.google.com.eg/#hl=en&q=safe house+منزل آمن&sa=X&e...

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Note added at 47 mins (2010-08-21 13:52:57 GMT)
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المنزل الآمن، أو البيت الآمن ، أو محل الإقامة الآمن

This term is commonly used in narratives of Guantanamo Bay detainees who are accused of being associated with Al-Qa`ida or Taliban. Two similar but different terms are used in such narratives:

Guest house: مَضافة، والجمع مَضائف أو مَضايف لتسهيل اللفظ
Safe house: مَأمَن، والجمع مآمن

In law enforcement jargon and intelligence jargon, a safe house is a secure location, suitable for hiding witnesses, agents or other persons perceived as being in danger. It may also refer to:

a place where people may go to avoid prosecution of their activities by authorities
a location where a trusted adult or family or charity organization provides a safe haven for victims of domestic abuse. See also: Women's shelter.
a home of a trusted person, family or organization where victims of war and/or persecution may take refuge, receive protection and/or live in secret.
sanctuary in medieval law
sanctuary in modern times
right of asylum
Typically, the locations of safe houses are kept secret from all but a limited number of people, for the safety of those hidden within them.

Many religious institutions will allow one to obtain sanctuary within one's place of worship, and some governments respect and do not violate such sanctuary.

Safe houses were an integral part of the Underground Railroad, the now-famous network of safe house locations that were used to assist slaves in escaping to the primarily northern free states in the 19th century United States. Some houses were marked with a statue of an African-American man holding a lantern, called "The Lantern Holder".[1]

Safe houses also provided a refuge for victims of Nazi persecution and for escaping prisoners of war. Victims, such as Anne Frank and her family, were harbored clandestinely for extended periods of time.