Now look at the red brick buildings beside the fort. In 1860, the Treaty of Tianjin between China and Britain was signed, and Tamsui Port was opened. The British ended up making this hilltop their consulate. The consulate's outer walls are made of Qing dynasty red brick in a warm orange-red. Arched corridors, sloping roofs and high steps give it the look of classic colonial architecture. The main fort, by contrast, has a square layout. The British story ran a long time. In 1946, Britain returned to the site, claiming a perpetual leasehold, and reopened the consulate. On the sixth of January, 1950, Britain severed diplomatic relations with the Republic of China, yet the consulate in Tamsui kept working. In 1980, the Taiwanese government retrieved the land from the British. The site was designated a national monument on the twenty-eighth of December, 1983, and its exterior was fully renovated the following year. The former residence became the Tamsui Historical Museum in 2005. Nearby, the current Tamsui Church was designed and supervised by Reverend G. W. Mackay in 1932, after the death of his father, Reverend George Leslie Mackay. Together, the fort and its surrounding buildings are listed by the Ministry of Culture as one of 18 potential World Heritage Sites in Taiwan.