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Investments in real estate (Tables)
3 Months Ended
Mar. 31, 2024
Real Estate [Abstract]  
Schedule of Real Estate Properties
Our consolidated investments in real estate, including real estate assets classified as held for sale as described in Note 15 – “Assets classified as held for sale” to our unaudited consolidated financial statements, consisted of the following as of March 31, 2024 and December 31, 2023 (in thousands):

March 31, 2024December 31, 2023
Rental properties:
Land (related to rental properties)$4,440,428 $4,385,515 
Buildings and building improvements20,532,577 20,320,866 
Other improvements3,898,310 3,681,628 
Rental properties28,871,315 28,388,009 
Development and redevelopment projects8,668,680 8,226,309 
Gross investments in real estate 37,539,995 36,614,318 
Less: accumulated depreciation(5,216,857)(4,980,807)
Investments in real estate$32,323,138 $31,633,511 
Real estate assets dispositions
Our completed dispositions of and sales of partial interests in real estate assets during the three months ended March 31, 2024 consisted of the following (dollars in thousands):
Gain on Sales of Real Estate
PropertySubmarket/MarketDate of SaleInterest SoldRSFSales Price
Dispositions of real estate:
99 A Street(1)
Seaport Innovation District/Greater Boston3/8/24100 %235,000 $13,350 $— 
Other3,863 392 
$17,213 $392 
(1)During the three months ended December 31, 2023, we recognized a real estate impairment charge of $36.1 million to reduce our investment to its current fair value less costs to sell. We completed the sale during the three months ended March 31, 2024.