The Two Towers is a subtheme of The Lord of the Rings that consists of 4 sets that ran from 2012 to 2013. Most sets were released in 2012 which accounted for 3 sets. As of today, the average annual growth of sets in The Lord of the Rings The Two Towers is approximately 13.9% per year.
Most valuable The Lord of the Rings The Two Towers set
10237 Tower of Orthanc $1,830.82
Highest growth The Lord of the Rings The Two Towers set
9471 Uruk-Hai Army +900.33%
The Two Towers was an unofficial subtheme of the LEGO The Lord of the Rings theme. It was introduced in 2012 and consists of four sets.
4 sets

10237 Tower of Orthanc

Theme / Subtheme The Lord of the Rings / The Two Towers
Year 2013
Pieces / Minifigs 2,359 / 5
Availability Retired
10237 LEGO The Lord of the Rings The Two Towers Tower of Orthanc
Retail $199.99
Value $1,830.82
Growth  +815.5%
Annual growth 18.6%

9474 The Battle Of Helm's Deep

Theme / Subtheme The Lord of the Rings / The Two Towers
Year 2012
Pieces / Minifigs 1,368 / 8
Availability Retired
9474 LEGO The Lord of the Rings The Two Towers The Battle Of Helm's Deep
Retail $129.99
Value $818.00
Growth  +529.3%
Annual growth 14.2%

9471 Uruk-Hai Army

Theme / Subtheme The Lord of the Rings / The Two Towers
Year 2012
Pieces / Minifigs 257 / 6
Availability Retired
9471 LEGO The Lord of the Rings The Two Towers Uruk-Hai Army
Retail $29.99
Value $300.00
Growth  +900.3%
Annual growth 16.2%

30211 Uruk-Hai with Ballista

Theme / Subtheme The Lord of the Rings / The Two Towers
Year 2012
Pieces / Minifigs 21 / 1
Availability Retired
30211 LEGO The Lord of the Rings The Two Towers Uruk-Hai with Ballista
Retail $3.99
Value $36.00
Growth  +802.3%
Annual growth 12.6%