The state religion is Roman Catholicism, to which about 77% of the population adheres; however, absolute freedom of worship prevails.
The Swiss Frank (plural: Franken) has been the currency of Liechtenstein since 1920. The Swiss franc is legal tender since Liechtenstein is in a customs and monetary union with Switzerland. The 1980 treaty between Switzerland and Liechtenstein allows Liechtenstein to mint Swiss franc coins, but not to issue banknotes.
Most visits to Liechtenstein are trouble-free but you should be aware of the global risk of indiscriminate international terrorist attacks, which could be against civilian targets, including places frequented by foreigners.