The Tremont Plaza Hotel Baltimore, Maryland The Tremont Plaza Hotel, built in 1866, has entertained stars of the stage, the field, the diamond and the big screen. This Baltimore treasure extensively incorporates the use of imported marble in its public lobby restroom, which is finished with grand columns and chandeliers. It's a must-see Maryland attraction! Top Restroom Features: - Extensive use of imported marble - Grand columns - Chandeliers - Hand-carved woodwork