It paid $57.8 million or a record $219 per sf for thetwo-building, 263,770-sf campus. Invesco, which is still trying tosettle charges that it allowed late trading for some investors, hasa 15-year lease on its buildings, although many local experts feelthe odds are good it will largely leave Denver long before then,although it will still be on the hook for the lease payments.Indeed, the company leases most of the larger of the two buildings,but most of the second building is available for subleasedeals.

But Challenger, in a recent press release issued from Australia,says it only has two properties remaining in the US--the InvescoFunds Corporate Campus and 50 Milk St. in Boston--and the companywill "explore" their sales. Challenger says the two properties areworth $240 million in Australian dollars, which is the equivalentto about $169 million.

Challenger chief executive officer Chris Cuffe says thecompany's decision to explore the sale of the Denver and Bostonproperties is a "result of considerable interest" since Challengerannounced it was exploring the foreign property sales.