Ostankino Tower is a television and radio tower in Moscow, Russia, owned by the Moscow branch of unitary enterprise Russian TV and Radio Broadcasting Network. Standing 540.1 metres (1,772 ft), it was designed by Nikolai Nikitin. As of 2022, it is the tallest free-standing structure in Europe and 12th tallest in the world. Between 1967 and 1974, it was the tallest in the world. The tower was the first free-standing structure to exceed 500 m (1,600 ft) in height. Ostankino was built to mark the 50th anniversary of the October Revolution. It is named after the surrounding Ostankino district of Moscow.

Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" (compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service.