• 1666 establishments by continent (4 C)
• 1666 establishments by country (27 C)

B

• Buildings and structures completed in 1666 (2 C, 5 P)

C

• Constituencies established in 1666 (1 P)

N

• Noble titles created in 1666 (3 P)

O

• Organizations established in 1666 (2 C, 1 P)

P

• Populated places established in 1666 (12 P)
• Publications established in 1666 (1 P)

S

• States and territories established in 1666 (4 P)