The Atlit Detainee Camp Museum is located in Atlit, a small town located on the northern coast about 20 kilometers south of Haifa. In the 1930s and 40s, this site served as a detention center for illegal Jewish immigrants seeking refuge in Palestine (which is now the State of Israel). The land was under British Mandate and officials let very few Jewish people into the country legally. Tens of thousands of Jewish people were interned here during this time period. Although first-time visitors may not be familiar with this museum, it is very significant site in the history of Israel.
Illegal immigrants are known as “ma’apilim”. Before and during World War II, thousands of Jewish people were fleeing their homes trying to escape persecution and concentration camps. Many coming from Europe and northern Africa chose to seek refuge in Palestine, which was under British Mandate. More than 122,000 people came to Israel despite the blockade.
https://www.touristisrael.com/atlit-detainee-camp-museum/16177/