Category:Infrastructure completed in the 1660s Architecture portalEngineering portalThis category is for infrastructure completed in the decade 1660s.1610s1620s1630s1640s1650s1660s1670s1680s1690s1700s1710s 12th13th14th15th16th17th18th19th20th21st22nd Subcategories This category has only the following subcategory. T Transport infrastructure completed in the 1660s (5 P)
