Louis' Lunch onion, then served on two square pieces of toasted white bread. Louis' Lunch flame broils the hamburgers in the original cast iron vertical gas broilers manufactured by the Bridge and Beach, Co., St. Louis, Missouri in 1898. The stoves use hinged steel wire gridirons to hold the hamburgers in place while they cook simultaneously on both sides. The gridirons were made by Luigi Pieragostini and patented in 1938. A sharp cheese spread is used, as opposed to sliced cheese. The restaurant uses a 1929 Savory Radiant Gas Toaster. The restaurant is traditionally closed during the month of August (for annual
Royal field with the monument to Přemysl, the Ploughman a basis of the Czech field pole (). In 1841 count Nostitz erected on the Royal field the monument to Přemysl the Ploughman. The monument was proposed by architect F. Staumann. It is composed of a stone pedestal on the top of which a plough made of cast iron is situated. In the front and the back of the pedestal there are iron reliefs by Josef Max depicting encounter of Přemysl, the Ploughman with the delegation of princess Libuše and his arrival to Vyšehrad. On the left side of the pedestal there is an inscription „"ZDE OD PLUHU PŘEMYSL k