By the turn of the century approximately 500,000 people were visiting the Pocono Mountains and the Delaware Water Gap each year. In 1910 Theodore Roosevelt visited the region and stayed at the Water Gap House. A few years later in 1912 John Philip Sousa peformed in the Pocono's. It was also a time that many huge resorts began operations like the Pocono Manor, Skytop and The Inn at Buck Hill. The regions first golf course was built in 1904. Train service was also peaking at this time with the arrival of the legendary Phoebe Snow, the finest passenger train in the world!

Pike County had a number of resorts that hosted D.W.Griffith, film director of the famous Birth of a Nation in 1915. Accompanying Griffith was actresses Mary Pickford and Dorothy and Lillian Gish.

Another historic attraction, Rohmans Inn, in Shohola, hosted Gloria Swanson, Charles Lindbergh, Jean Harlow, Bette Davis, Babe Ruth and many other stars of its era. Western Novelist Zane Grey had a home along the Delaware River in Lackawaxen and lived there from 1905 to 1918. His home is maintained as the Zane Grey Museum and contains many original manuscripts.

In 1924 the Pennsylvania Power and Light Company purchased 12,000 acres between Pike and Wayne counties and built Lake Wallenpaupack to use the waters for hydro-electric power. The lake is 5,700 acres, 13 ½ miles long, has 52 miles of shoreline, has 2 ½ billion gallons of water and serves the region as a premier lake with thousands of lakefront homes.