As time went on, the fascination that people had with Grand Central grew, particularly because the station’s development coincided with the Roaring Twenties, the era of luxury and consumerism. In fact, the terminal became one of the many industries that contributed to the rise in consumerism. It developed even more by adding more hotels, restaurants, shops and boutiques, in order to accommodate the exponentially growing number of visitors. Soon after the terminal was completed, hotel construction followed up until the early 1930s: the Biltmore hotel, built in 1914; the Commodore, in 1919; the Ambassador, in 1921; and finally, the Waldorf-Astoria, in 1931. Together, these hotels served to provide more than 5,000 guest rooms. Yet as more of these glamorous hotels next to Grand Central were built, competition for the guest rooms increased especially because the number of visitors continued to increase over the years and reached up to 155,000 passengers per day by 1929. The number of daily traffic jams increased too: at the start of the terminal construction, in 1903, the number of traffic jams at the Depot was 44,200. By 1919, the number doubled to 88,500, and by 1921, the number was 111,040. What attracted many visitors was the idea that once inside the terminal, all hotels, restaurants, shops, which provided for their needs, were within reach; they could practically live inside the city. In fact, some hotels, like Waldorf-Astoria, had secret passageways directly linked to Grand Central Terminal. This meant that during one weekend, people could board on a train to Grand Central, eat at a restaurant at the terminal, and check-in at one of the hotels without ever needing to step outside. This feature attracted many, particularly traveling businessmen, and this appeal was a major factor of the growing number of visitors of the terminal in 1920’s.