Fortified Church of St. Arbogast - Credit: Wikimedia Commons
The Fortified Church of St. Arbogast () in the municipality of Muttenz in the Swiss canton of Basel-Land is the only church in Switzerland that is surrounded by a defensive wall. It is an example of the fortified church type of construction, and is a Swiss heritage site of national significance. The church is still used as a local village church. Read more on Wikipedia
Source: en.wikipedia.org