The founders of the New York City subway believed that every design element in the system should show respect for our customers and enhance the experience of travel. Language was added to contracts that required the highest quality materials and craftsmanship. This led to the extensive use of ceramic tile, terra cotta and mosaics as decorative elements. As the century-old transportation network is restored and renewed, these decorative elements of the past are preserved and protected as contemporary art and design are introduced.