The community is reached by automobile using County Route 100, which leads northeast 2.5 miles (4.0 km) to Interstate 81 at Exit 51.

According to the United States Census Bureau, the Thousand Island Park CDP has a total area of 0.29 square miles (0.76 km2), all land.

[3] Rock Island Light is 0.5 miles (0.8 km) southeast of Thousand Island Park in the middle of the south channel of the St. Lawrence, known as American Narrows, and Fishers Landing is directly across the narrows on the mainland, 1 mile (1.6 km) southeast of the community.

A more liberal policy relaxed restrictions on curfews and the prohibition of cards and alcohol bringing more of a resort character to the Park.

The new, larger Pavilion was able to accommodate the landing of steamships and served as the gateway to the Park with hundreds of visitors seeking intellectual pursuits and entertainment by participating in the Chautauqua programs.

[9] The destruction by fire in 1912 of the Park's last great hotel, The Columbian and 99 cottages plus the business district, signaled the end of the Golden Era.

[12] In 1975, the Centennial Celebration served as a catalyst for change in the Park; the architectural charm and setting was once again appreciated.

The Centennial Year Celebration inspired the formation of the Landmark Society in 1976, and the path that led to the Park regaining its architectural character and integrity.

A small group of dedicated Landmark Society members initiated the nomination of Thousand Island Park to the National Register of Historic Places, finally achieved in 1982.

The swami is an Indian saint best known for his contributions to the interfaith movement and introduction of vedanta and yoga in the Western world.

He performed lectures to visiting members of his Vedanta Society, which were later compiled into the book Inspired Talks, published in 1909.