320 South Boston Building

The 320 South Boston Building is an Art Deco skyscraper with 22 floors in downtown Tulsa, its exterior shaped with red brick and decorative terra cotta elements. The structure contains approximately 400,000 square feet (37,000 square meters) of office space and connects to Tulsa's underground walkway system leading to parking, restaurants, and hotels.

The building was designed in 1928 by architect George Winkler and was once the tallest structure in Oklahoma and later in Tulsa. It stands as a monument to the oil boom era and the economic development of the region during the early modern period.

The building displays Art Deco details like geometric patterns and ornamental terra cotta work that reflect commercial design of the early 1900s. Visitors can see these decorative elements clearly from street level and observe how the architecture preserves the elegance of that era.

Visitors can view the building from outside and explore the nearby underground access points that connect to surrounding amenities. The area makes it easy to move between the structure and nearby services without going above ground.

At the top of the building sits a cupola tower with lighting elements that change color based on weather conditions to provide weather forecasts for the city. This unusual feature makes the structure both a landmark and a practical reference point for residents and visitors.

Location: Oklahoma

Inception: 1928

Architects: George Winkler

Floors above the ground: 22

GPS coordinates: 36.15300,-95.98980

Latest update: December 8, 2025 21:00