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Investments in Properties (Tables)
9 Months Ended
Sep. 30, 2022
Investments in Properties  
Schedule of Investments in Properties

A summary of our investments in properties is below (in thousands):

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​

​

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Property Type

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As of September 30, 2022

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As of December 31, 2021

Land

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$

1,004,328

​

​

$

1,019,723

Acquired ground lease

​

​

5,552

​

​

​

6,721

Buildings and improvements

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​

23,113,155

​

​

​

21,914,091

Tenant improvements

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​

753,565

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​

​

684,915

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​

​

24,876,600

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​

​

23,625,450

Accumulated depreciation and amortization

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​

(6,826,918)

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​

​

(6,210,281)

Investments in operating properties, net

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​

18,049,682

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​

​

17,415,169

Construction in progress and space held for development

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​

4,222,142

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​

​

3,213,389

Land held for future development

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​

34,713

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​

​

133,683

Investments in properties, net

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$

22,306,537

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​

$

20,762,241