Union Investment has bought a Seattle office asset for nearly $300m (€276m).

The German investment manager acquired the Amazon Phase VI building in the city’s South Lake Union district. 

The property is almost fully let on a 15-year lease.

The 395,000 sqft asset was bought by Union for its open-ended, Unilmmo: Europa fund.

Martin Brühl, head of investment management international at Union, said: “Seattle is one of the fastest-growing US cities and highly attractive to young, well-educated employees, so it provides ideal conditions for our increased international focus.�

Developer Vulcan Real Estate sold the building, at 515 Westlake Avenue North and 500 Ninth Avenue North, in an open market deal.

Union’s 20-storey Millennium Tower in Seattle has been part of the UniImmo: Europa portfolio since 2003.

Two years ago, Union sold the Fifth & Pine building in Seattle for a substantial profit.