The Red Antiquarian Bookshop is a company specializing in the trade of antiquarian books, artworks, and documents. The company's core activity includes the sale of: antiquarian books, particularly in the fields of philosophy, history, politics, literature, and art; artworks, such as graphics, photographs, and other prints; documents, such as leaflets, posters, and archival materials; and rare publications, including first editions and limited editions. The company operates several retail stores in Berlin and Vienna, where customers can view and purchase the merchandise directly. Additionally, the Red Antiquarian Bookshop also offers an online shop where customers can buy books and other items online.