As the city continued to prosper during the 18th century, Georgian Dublin became, for a short period, the second largest city of the British Empire and the fifth largest city in Europe, with the population exceeding 130,000. The vast majority of Dublin's most notable architecture dates from this period – Temple Bar and the areas around the Four Courts and the Custom House, and Grafton Street, are some of the few remaining parts of Dublin that were not affected by the wave of Georgian reconstruction and maintained their medieval character.