Dublin is the capital and largest city in Ireland. Dublin is in the province of Leinster on the east coast of Ireland, at the mouth of the River Liffey and bordered on the south by the Wicklow Mountains. Dublin experiences a maritime climate (Cfb) with cool summers, mild winters, and a lack of temperature extremes. The Dublin region is the economic centre of Ireland, and was at the forefront of the country's economic expansion during the Celtic Tigerperiod. Dublin has a vibrant nightlife and is reputedly one of Europe's most youthful cities. Live music is popularly played on streets and at venues throughout Dublin. The city retains a thriving market culture, despite new shopping developments and the loss of some traditional market sites.  Ireland's biggest libraries and literary museums are found in Dublin.