Examples of websites using
Europa
(Europa is a sans-serif font designed by Fabian Leuenberger and released by EuropaType in 2011. The font family consists of 36 individual styles, including regular, italic, thin, bold, and condensed variations)
with
Roboto
(Roboto is a sans-serif font designed by Christian Robertson and published through Google. The font family consists of 12 styles, including regular, italic, bold, and bold italic variations)