You can't. It's in their Constitution:
http://www.venezuelaemb.or.kr/english/ConstitutionoftheBolivarianingles.pdf
"Article 13: The territory shall never be assigned, transferred, leased or in any manner whatsoever conveyed, even temporarily or partially, to foreign States or other international law subjects. The geographical space of Venezuela is an area of peace. No foreign military bases or facilities having purposes that are in any way military shall be established within such space by any power or coalition of powers. Foreign States or other international law subjects shall be permitted to acquire real property only for the quarters of their diplomatic or consular delegations, within such area as may be determined and subject to guarantees of reciprocity, with such limitations as may be established by law. In all such cases, national sovereignty shall remain intact. There shall be no conveyance of title to vacant land existing within the federal dependencies and on islands in rivers and lakes, and the right to use the same shall be granted only in a manner that does not involve, directly or indirectly, the transfer of title to the land"