German property investment company Oppenheim Immobilien has acquired Warsaw's BTA Office Building for an undisclosed amount. The building is located on Rzymowskiego Street in the Mokotow district of the Polish capital. The property provides some 6,700 m[sup]2[/sup] of fully-leased space and the major tenants include Pfeizer, BZ WBK Bank, TBWA, Bonair and Rothschild RCF. Real estate adviser DTZ acted for the purchaser.