Visitors at Taipei's Palace Museum [file photo]
Tourist numbers are expected to hit 4.4 million per year after 2016 and are set to double the current figure to hit 7 million per year by 2041.
Visitors have flocked to the museum since authorities in Taiwan lifted a ban on mainlanders traveling to the island in July 2008. Taipei's Palace Museum is considered a must-see destination on mainlanders' Taiwan trips.
The mainland is currently the biggest source of tourists to the island. More than 210,000 tourists from the Chinese mainland visited Taiwan in April, a record monthly high, an official with the island's tourism department said Tuesday.
In 2011, more than 1.78 million mainland residents visited Taiwan, a year-on-year increase of 9.4 percent, taking up nearly one third of the 6.08 million visitors the island received last year, according to Taiwan's tourism authorities.