TL;DR: Hungary has the option to invest in €360.000, from which you get €300.000 back fully after 5 years with a long term residency that allows free Schengen travels
Hungary recently introduced a residency bond program, which will allow you for visa free Schengen travels, and a lifetime residency after 5 years. The minimum you have to invest is €250.000 (and pay around €110.000 extra fees), but you get most of the money back after 5 years, making this a very attractive (and also very controversial) way to get a Schengen visa.
I couldn't find a proper English version of the actual law (which is not surprising, given you can only invest through government approved, but usually offshore companies, which is partly the reason why this option is controversial), but here is an excerpt from the FAQ from one of these middleman companies:
WHAT IS THE HUNGARIAN RESIDENCY BOND PROGRAM?
The Hungarian Parliament
adopted a new regulation regarding 'investor residency' in Hungary.
This Program offers permanent residency under preferential conditions
for non-EU nationals who have at least EUR 360,000 to invest. Please
note that EUR 300,000 will be refunded to you after 5 years.
IS THE RESIDENCY BOND PROGRAM APPROVED BY THE
Yes. A law, passed on 11th December 2012 and
modified in 2014, offers permanent residency in Hungary for non-EU
nationals willing to invest in government residency bonds.
WHAT ARE THE BENEFITS OF THE PROGRAM?
The main advantage is
that you and your family become a permanent resident in Hungary, a
member country of European Union thus you can move freely within
Schengen countries in Europe (Schengen visa).
IS THE PROGRAM POPULAR?
Hungarian Residency Bond Program
is getting popular: number of residence permits issued increases
enormously. Until now more than 3429 Residency Government Bonds have
been purchased. Hungarian authorities hope that the trend will
continue in 2016 as well.
The law in Hungarian can be read here.
Note that because of the controversial nature of the program, and recent debates in the Parliament about it, it's highly likely it will end soon, although anyone who had already invested will still be fine
Also this first only gives you residency rights to remain in the county indefinitely, you will need to apply for citizenship after 8 years (which this visa allows)
(Originally posted on https://money.stackexchange.com/questions/63870/residency-citizenship-fast-tracked-through-investment/63877#63877)