When building structures, it's important to remember that triangles are stronger than squares. Using triangles in a structure to make it stronger is called triangulation .

The Triangle Building, located at 926 Liberty Ave. in downtown Pittsburgh, is set to undergo major redevelopment.

The building is well-known for its triangular shape and is a historic structure in Pittsburgh. It is located near the Cultural District and was constructed in 1868.

Like the fact that soon you can actually live in the Flatiron Building, one of New York City’s most storied structures. Learn more in this guide from AD.

A garden tops the rounded wedge-shape of the Tonalá 15 apartment building in Mexico City, which was clad in orange-toned concrete by local studio CRB Arquitectos. The 13-storey complex is located ...