Property

Our property consists of the following (in thousands):



	March 31, 2019		December 31, 2018
Land	$	908,682	$	919,237
Land held for development	42,795		45,673
Land under development	56,750		55,793
Buildings and improvements	2,914,394		2,927,954
Construction in-progress	182,174		156,411
Total	$	4,104,795	$	4,105,068

During the three months ended March 31, 2019, we sold three centers and other property. Aggregate gross sales proceeds from these transactions approximated $67.2 million and generated gains of approximately $17.8 million. Also, during the three months ended March 31, 2019, we acquired one center with an aggregate gross purchase price of approximately $20.3 million, and we invested $22.5 million in new development projects.