Dome lounge

A dome car is a type of railway passenger car that has a glass dome on the top of the car where passengers can ride and see in all directions around the train. It also can include features of a coach, lounge car, dining car, sleeping car or observation. Beginning in 1945, dome cars were primarily used in the United States and Canada, though a small number were constructed in Europe for Trans Europ Express service, and similar panorama cars are in service on Alpine tourist railways like the Bernina Express.

In North America, dome cars were manufactured by the Budd Company, Pullman Standard and American Car & Foundry. Southern Pacific Railroad built its own dome cars in its Sacramento, California, shops. In the 1990s Colorado Railcar began producing dome cars. Generally, seats in the dome were considered "non-revenue" like lounge car seats. When dome cars operate today in excursion trains, the dome seats often command a premium fare.

A portion of the car, usually in the center of the car but offset towards one end, is split between two levels. The offset results in floorplans having a "long end" and a "short end" on the main level. Stairs then go up to the dome and down to the lower level, with the lower level below the dome usually offering restrooms or a small lounge area, while the upper portion is usually coach or lounge seating within a "bubble" of glass on the car's roof. Passengers in the upper portion of the dome are able to see in all directions from a vantage point above the train's roofline.

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Wikipedia