Bursa is so jampacked with historic structures that it would be impossible to list them all here. In addition to the major sites named below, be sure to wander through the marketplace, spread out among open-air and covered streets. Hans are traditionally double-storied arcaded buildings with a central courtyard, usually occupied by an ornate fountain or pool or raised mescit (a small mosque). The hans are still used for trade and make lovely shaded retreats to take a coffee outdoors and poke amid the local merchandise. The Fidan Han dates to the 15th century and has a central pool topped by a mescit. The Pirinç Han (closed) was constructed by Beyazit II to earn the revenue necessary to cover the expenses of his mosque and soup kitchen in Istanbul. The Ipek Han is the largest han in Bursa and contains an octagonal mescit in the center of the courtyard. The revenue from this han was used to pay for the construction of the Yesil Mosque. The courtyard of Emir Han has a graceful marble pool with exterior faucets to allow for ablutions.