From a build of LotR's Barad-dûr to the Titanic, here are some excellent 3D puzzle alternatives to some of LEGO's pricier builds.

The entire castle measures approximately 13 x 21 inches in size. This LEGO set is designed for adults, though you could really make a family game night out of it.

Like most other situations with LEGO, you’re getting what you pay for here. The entire set took about 405 minutes to build — just under seven total hours spread across a couple of sessions.