In 1972, LEGO released 16 LEGOLAND sets across 3 subthemes, all of these sets have been retired. Subthemes for that year included Building, Town, and Vehicle. For that year, the total price of all retail sets cost $97, today those sets are valued around $5,598.
Most valuable 1972 LEGOLAND set
1550 Sterling Super Caravelle $1,351.09
Largest 1972 LEGOLAND set
355 Town Center Set with Roadways 336 pieces
Most owned 1972 LEGOLAND set
354 Police Heliport
16 sets

352 Windmill and Lorry

Theme / Subtheme LEGOLAND / Building
Year 1972
Pieces 142
Availability Retired
352 LEGOLAND Windmill and Lorry
Retail $7.75
Value $372.64
Growth  +4708.3%
Annual growth 7.4%

353 Terrace House with Car and Garage

Theme / Subtheme LEGOLAND / Building
Year 1972
Pieces 152
Availability Retired
353 LEGOLAND Terrace House with Car and Garage
Retail $9.95

354 Police Heliport

Theme / Subtheme LEGOLAND / Town
Year 1972
Pieces 168
Availability Retired
354 LEGOLAND Town Police Heliport
Retail $9.95

355 Town Center Set with Roadways

Theme / Subtheme LEGOLAND / Town
Year 1972
Pieces 336
Availability Retired
355 LEGOLAND Town Center Set with Roadways
Retail $15.50
Value $1,307.47
Growth  +8335.3%
Annual growth 8.6%

378 Tractor

Theme / Subtheme LEGOLAND / Vehicle
Year 1972
Pieces 36
Availability Retired
378 LEGOLAND Tractor
Retail $6.49
Value $515.54
Growth  +7843.6%
Annual growth 4.8%

379-2 Car and Caravan

Theme LEGOLAND
Year 1972
Pieces 93
Availability Retired
379-2 LEGOLAND Car and Caravan
Retail $2.25
Value $455.71
Growth  +20153.8%
Annual growth 10.3%

606-2 Tipper Lorry

Theme / Subtheme LEGOLAND / Vehicle
Year 1972
Pieces 22
Availability Retired
606-2 LEGOLAND Tipper Lorry
Retail $3.49
Value $125.33
Growth  +3491.1%
Annual growth 6.9%

609 Aeroplane

Theme LEGOLAND
Year 1972
Pieces 28
Availability Retired
609 LEGOLAND Aeroplane
Retail $2.15
Value $73.32
Growth  +3310.2%
Annual growth 4.7%

649 Low Loader Excavator

Theme / Subtheme LEGOLAND / Vehicle
Year 1972
Pieces 35
Availability Retired
649 LEGOLAND Low Loader Excavator
Retail $4.49
Value $147.58
Growth  +3186.9%
Annual growth 6.7%

650 Car with Trailer and Racing Car

Theme / Subtheme LEGOLAND / Vehicle
Year 1972
Pieces 40
Availability Retired
650 LEGOLAND Car with Trailer and Racing Car
Retail $3.49
Value $169.86
Growth  +4767.0%
Annual growth 7.5%

651 Tow Truck and Car

Theme / Subtheme LEGOLAND / Vehicle
Year 1972
Pieces 40
Availability Retired
651 LEGOLAND Tow Truck and Car
Retail $5.49
Value $136.50
Growth  +2386.3%
Annual growth 6.1%

652-2 Forklift with Trailer

Theme / Subtheme LEGOLAND / Vehicle
Year 1972
Pieces 34
Availability Retired
652-2 LEGOLAND Forklift with Trailer
Retail $5.29
Value $191.96
Growth  +3528.7%
Annual growth 6.9%

684 Low-Loader Truck with Forklift

Theme / Subtheme LEGOLAND / Vehicle
Year 1972
Pieces 53
Availability Retired
684 LEGOLAND Low-Loader Truck with Forklift
Retail $7.49
Value $145.75
Growth  +1845.9%
Annual growth 3.2%

685 LEGOLAND Truck with Trailer

Theme / Subtheme LEGOLAND / Town
Year 1972
Pieces 51
Availability Retired
685 Town LEGOLAND Truck with Trailer
Retail $4.49
Value $260.00
Growth  +5690.6%
Annual growth 7.8%

1550 Sterling Super Caravelle

Theme LEGOLAND
Year 1972
Pieces 49
Availability Retired
1550 LEGOLAND Sterling Super Caravelle
Retail $4.49
Value $1,351.09
Growth  +29991.1%
Annual growth 11.2%

1551-2 Sterling Baggage Train

Theme LEGOLAND
Year 1972
Pieces 49
Availability Retired
1551-2 LEGOLAND Sterling Baggage Train
Retail $4.49
Value $344.92
Growth  +7582.0%
Annual growth 8.4%