Williamson Building
Built 1900, Demolished 1982
16 Stories
Architect: George B. Post
Current Status: Now the site of 200 Public Square
The Williamson Building was located at the southeastern corner of Public Square (at Euclid Avenue). It was once the tallest building in the city. Along with the Cuyahoga Building (located on the adjacent site north), the Williamson Building was demolished in 1982 and the Sohio Building (now 200 Public Square) was constructed in its place.

Union National Bank Building
Built 1916, Demolished 1950s
16 Stories
Architect: Walker and Weeks
Current Status: Now the site of the House of Blues (formerly Woolworth Department Store)
The Union National Bank Building occupied the site at 308 Euclid Avenue, just east of Public Square. It was demolished in the 1950s for construction of the Woolworth store, now the House of Blues concert venue.

Engineers Building
Built 1910, Demolished 1989
14 Stories
Architect: Knox and Elliot
Current Status: Now the site of the Marriott at Key Center
The Engineers Building was located at the southeastern corner of Ontario Street and St. Clair Avenue. The structure was notable for its exceptionally detailed terra cotta facade. It was demolished in 1989 to make way for the Marriott hotel.

Hippodrome Building
Built 1908, Demolished 1980
12 Stories
Architect: Knox and Elliot
Current status: Parking lot
The Hippodrome Building was located at 720 Euclid Avenue. The structure contained the Hippodrome theatre, one of the largest in the United States. It was demolished in 1980.