Emerson Tower often referenced as Emerson Bromo-Seltzer Tower is a 15-story, 88 m (289 ft) skyscraper erected in 1911 at the corner of Eutaw and Lombard Streets in Baltimore, Maryland, designed by Joseph Evans Sperry for Bromo-Seltzer inventor "Captain" Isaac E. Emerson. It was the tallest building in Baltimore from 1911 until 1923. The design of the tower along with the original factory building at its base was inspired by the Palazzo Vecchio in Florence, Italy, which was seen by Emerson during a tour of Europe in 1900. The adjoining factory was demolished in 1969 and replaced with a firehouse.

The building features four clock faces adorning the tower's 15th floor on the North, South, East and West sides. Installed by the Seth Thomas Clock Company at an original cost of US$3,965, they are made of translucent white glass and feature the letters B-R-O-M-O S-E-L-T-Z-E-R, with the Roman numerals being less prominent. The dials, which are illuminated at night with LED lights are 24 feet in diameter, and the minute and hour hands approximately 12 and 10 feet in length respectively. Upon its completion, the Bromo Seltzer Tower featured the largest four dial gravity driven clock in the world. The tower originally had a 51 ft Bromo-Seltzer bottle, glowing blue and rotating. Weighing 20 tons , it was lined with 314 illuminated w/ lights and topped with a crown on a clear night it could be seen from 20 miles away. The bottle was removed in 1936 because of structural concerns.

The tower was virtually abandoned in 2002, but in early 2007 the structure was transformed into artist studios.