Radler is a popular beer-based drink that is enjoyed in Vienna and throughout Austria. It is a refreshing blend of beer and lemonade, resulting in a light and citrusy flavor. Radler is often served in a tall glass with ice, making it the perfect drink for a hot summer day. It is a popular choice for those looking for a lighter and more refreshing alternative to traditional beer. Radler can be found in many bars and beer gardens in Vienna.