A hopping burger bar on the fringe of Riegrovy Sady park in Vinohrady, the Tavern arguably serves the city's best hamburgers and cheeseburgers. The restaurant began as the dream of an American couple to use classic American burger combinations, like bacon-cheddar or blue cheese and caramelized onion, and then pair them with locally sourced beef and toppings. The result? It's been packed since the 2012 opening and shows no signs of slowing down. They also do veggie burgers, along with American-style diner food, and pies, cocktails, and craft beers. The opening hours are irregular, so check the website before heading out here. Reservations only by email. There's no phone.