Tremont House ( 1850 – 1871 , pictured left ) was a leading hotel in Chicago , United States , that served as the Headquarters for the Illinois Republican Party during the 1860 Republican National Convention held at the nearby Wigwam as they lobbied for Abraham Lincoln 's nomination . Both Lincoln and Stephen Douglas started their Senatorial campaigns from the balcony of this hotel . It was the third hotel bearing this name constructed at the Southeast corner of Lake Street and Dearborn in Chicago . It was a 260-room hotel by early Chicago architect John M. Van Osdel , who is known as the architect of the Illinois Executive Mansion . It was a block masonry structure with the finest amenities of the day . The original Tremont House built in 1833 had been named after the Boston Tremont House . In 1861 , this building served as Douglas ' deathplace
1860 Republican National Convention
1860 Republican National Convention
Tremont House (Chicago)