In German, a "Torburg", lit. "gate castle", is a relatively autonomous and heavily fortified gateway of a castle or town. Medieval castle gateways of this type usually have additional fortifications in front of them. A common form is the tower gateway (German: Turmtorburg); a variant is the bastion gateway (German: Halbrundturmtorburg). They are common in Europe.

Examples in Europe

France

Château du Sou in Lacenas

Germany

Deutsches Tor in Metz
Ehrentor, Eigelsteintorburg, Hahnentorburg, Kuniberts Tower, Schaafentor and Severin Gate in Cologne
Town fortifications of Erkelenz
Friedländer Tor in Neubrandenburg
Marching Gate and Bridge Gate in Aachen as well as Aachen's city walls
Upper Gate in Neuss
Fortified gateway of Seeburg Palace
Star Gate in Bonn
Fortified gateway of Stolberg Castle in Stolberg (Rhineland)
Porta Alba, Porta Nigra and Imperial Baths in Trier

Romania (Transylvania)

Stundturm in Sighișoara

United Kingdom

Westgate at Canterbury
Balkerne Gate at Colchester
Bargate, Southampton
Castle Upton in Templepatrick, Northern Ireland
Kingsgate and Westgate, Winchester
Monnow Bridge, Monmouth - the only surviving type in Britain with the gatehouse positioned on the bridge
Portgate on Hadrian's Wall
Five Arches Gate and Whitesand Gate at Tenby
Micklegate Bar and other gates at York

On coats of arms

Fortified gate in the Limerick coat of arms
Fortified gate in the Dinslaken coat of arms
Fortified gate in the Königswinter coat of arms
Fortified gate in the Wiehl coat of arms

City gate

Gatehouse

Torburg