Exhibit 21 Subsidiary State of Incorporation - ----------------------------------------------- ----------------------- HPTCY Corporation Delaware HPTRI Corporation Delaware HPTWN Corporation Delaware Hospitality Properties Mortgage Acceptance Corp. Delaware HPTSLC Corporation Delaware HPTMI Corporation Delaware HPTMI II Properties Trust Maryland HPT Suite Properties Trust Maryland HPT CW Properties Trust Maryland HPTSHC Properties Trust Maryland HPTCY Properties Trust Maryland HPTMI Properties Trust Maryland HPTSLC Properties Trust Maryland HPTRI Properties Trust Maryland HPTWN Properties Trust Maryland