This executive summary proposes the development of a multi-destination tourism project in the Greater Tumen Region (GTR) of Northeast Asia to capitalize on the region's growing tourism markets. The GTR has great natural, cultural and urban resources that could appeal to domestic Chinese, outbound Chinese, and international travelers. Developing cross-border tourism routes could attract over $4 billion annually from the Chinese market alone by offering travelers experiences across multiple countries. However, obstacles like low tourism services quality and difficulties obtaining visas between countries must first be addressed. Cross-border tourism has potential to strengthen regional cooperation and appeal to travelers seeking multicultural experiences.