Back to sets
Mystery Castle
Hidden Side
Set #70437-1

Mystery Castle

Piece count, minifigures, release year, and a quick overview of the set.

1035
Pieces
6
Minifigs
2020
Year

Qualifying purchases may earn commissions. Pricing and availability vary by region.

Overview

Great for expanding your brick city or starting a new collection.

Build experience78%
Playability70%
Display value52%

About this set

The LEGO Mystery Castle (70437-1) is a standout addition to the Hidden Side theme. Released in 2020, this set comprises 1035 pieces and includes 6 minifigures, offering a comprehensive building experience that caters to both casual fans and dedicated collectors. Whether you're looking for a center-piece for your display or a functional set for play, the Mystery Castle delivers on multiple fronts with its authentic design and quality components.

Quick highlights

Pros
  • Stunning attention to detail
  • Challenging and rewarding build
  • Excellent display presence
Cons
  • Many small pieces can be tedious

More from Hidden Side

View all
Hidden Side
Haunted Worker
792007-12020

Haunted Worker

8pcs1figs
View setPrice
Hidden Side
Possessed Mechanic
792008-12020

Possessed Mechanic

8pcs1figs
View setPrice
Hidden Side
Epic Haunted Biker
792005-12020

Epic Haunted Biker

7pcs1figs
View setPrice
Hidden Side
Phantom Fire Truck 3000
70436-12020

Phantom Fire Truck 3000

760pcs5figs
View setPrice
SetScout

Search LEGO sets, compare the details, and check prices. Independent fan site, not affiliated with the LEGO Group.

SetScout may earn a commission from qualifying Amazon purchases.

LEGO is a trademark of the LEGO Group, which does not sponsor, authorize, or endorse this site.

2026 SetScout