I live in Geneva in Switzerland, about 2 kilometres from the French border. 40 percent of the population are foreigners, and another 20 percent have an "immigration background" (=foreign parents). It is the most international city. This is because the city is the second most important seat of the UN after New York, hence there are loads of diplomats and other government officials. Racist or supremacist groups are non-existent, or at least not visible in public. There is slight racism from time to time, but it's not violent and not open.
And it's full of rich people. Because of low taxes and a specialized banking sector, billionaires flock for houses in the area (which keeps the prices high everywhere else, which sucks for normal people like me). Ferraris, Aston Martins, Lamborghinis, Jaguars, Maseratis and even Bugattis (1 million euro per piece) are out on the streets in masses, Porsches are normal cars like any other.
The cuisines of virtually every country are represented (e.g. Tibetan, Ethiopian, Peruvian), but the local specialty includes melted cheese mixed with cherry liquor (or any liquor) which is served in large, heated pots, you eat it by sticking pieces of bread into the cheese. That's called fondue. There is also chocolate fondue (the same with biscuits and melted chocolate) and fondue bourguignonne (the same with pieces of beef and an oily sauce/soup).
The city is not especially exciting, nightlife is either full of drug-addicts, when you go for normal prices, or the entry is 100 franks (equals the dollar) upwards. The latest sick club has an entry of 1000 franks per night, and the drinks cost several hundreds of franks. Not exactly a student budget. Other than that, it is a quiet town, has great natural surroundings with a lake and the Alps nearby, a nice university, and great opportunities to make money and for internships.