<Table> <Tr> <Th_colspan="2"> Brandenburg Gate </Th> </Tr> <Tr> <Td_colspan="2"> Brandenburger Tor </Td> </Tr> <Tr> <Td_colspan="2"> The Brandenburg Gate at blue hour </Td> </Tr> <Tr> <Td_colspan="2"> Location within central Berlin </Td> </Tr> <Tr> <Th_colspan="2"> General information </Th> </Tr> <Tr> <Th> Type </Th> <Td> City gate </Td> </Tr> <Tr> <Th> Architectural style </Th> <Td> Neoclassical </Td> </Tr> <Tr> <Th> Location </Th> <Td> Berlin, Germany </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 52 ° 30 ′ 58.58" N 13 ° 22 ′ 39.80" E ﻿ / ﻿ 52.5162722 ° N 13.3777222 ° E ﻿ / 52.5162722; 13.3777222 Coordinates: 52 ° 30 ′ 58.58" N 13 ° 22 ′ 39.80" E ﻿ / ﻿ 52.5162722 ° N 13.3777222 ° E ﻿ / 52.5162722; 13.3777222 </Td> </Tr> <Tr> <Th> Construction started </Th> <Td> 1788 </Td> </Tr> <Tr> <Th> Completed </Th> <Td> 1791 </Td> </Tr> <Tr> <Th_colspan="2"> Design and construction </Th> </Tr> <Tr> <Th> Architect </Th> <Td> Carl Gotthard Langhans </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Brandenburg Gate </Th> </Tr>

The brandenburg gate in berlin marks what type of boundary