Edinburgh is Scotland's administrative, financial, legal, medical, and insurance center, and the city has become an important nuclear and electronics research center. The port imports grain, fertilizer, petroleum, minerals, wood pulp, cement, fruit, and vegetables. Edinburgh is a large brewing center, has a thriving publishing industry, and produces great quantities of high-grade paper. There are metalworks and rubber and engineering works. Other industries are distilling; the manufacture of glassware, drugs, and chemicals; and shipbuilding. The Waverly railway station is the second largest in Great Britain. Tourism is of major importance.