In order to preserve cultural patrimony for future generations, most countries ban exports of antiquities. However, this may drive trade underground, particularly in low-income and low-state capacity contexts. Illegal and clandestine trade in antiquities can irreversibly damage cultural heritage because looters sometimes use rapid but destructive methods, such as pneumatic drills, and deliberately destroy the archeological record that is vital to understanding the past. Even with perfect enforcement, export bans may reduce maintenance incentives. We argue that complementing export bans with fixed-duration, long-term leases can strengthen incentives for maintenance and revelation of antiquities, while preserving cultural patrimony and raising revenue. Allowing only leases rather than sales limits potential losses from corrupt deals between foreign collectors and government officials. Standardized contracts specifying procedures for care and insurance of leased antiquities, lease length, and procedures for qualifying bidders may also be necessary to limit corruption and establish a well-functioning market.