Choose Nanoblock for a detailed display model built from tiny pieces: NB-057 for a free-standing Eiffel Tower, NBH_205 for a desk-size Notre-Dame and NBM-032 for a dragon sculpture. Choose Lego when the model should hang on a wall (21064), open up (21061) or be posed and rebuilt (Creator 3in1 31161).
Nanoblock comes from the Japanese toy maker Kawada and uses far smaller pieces than Lego, so piece counts mislead across the two systems. Kawada's 960-piece dragon is 17 cm wide, while Lego's 715-piece dragon set builds one 52 cm wide. Each pair below shares a subject, so you can compare footprint and use directly.
The six models side by side
| Model | Pieces | Finished size (W × H × D) | Kawada level or Lego age mark | After building |
|---|---|---|---|---|
| Nanoblock Paris, Banks of the Seine Deluxe Edition NB-057 | 2,500 | 16 × 35 × 20 cm | Level 4 of 5 | Free-standing tower with three aircraft |
| Lego Architecture Paris – City of Love 21064 | 958 | 27 × 30 × 5 cm | 18+ | Framed skyline to hang or stand |
| Nanoblock Notre Dame Cathedral NBH_205 | 1,040 | 8 × 9.2 × 16 cm | Level 4 of 5 | Compact display model |
| Lego Architecture Notre-Dame de Paris 21061 | 4,383 | 22 × 33 × 41 cm | 18+ | Roof and towers lift off to look inside |
| Nanoblock Dragon NBM-032 | 960 | 17 × 12 × 17 cm | Level 4 of 5 | Static figure on its own legs |
| Lego Creator 3in1 Medieval Dragon 31161 | 715 | 52 × 13 × 39 cm (dragon) | 9+ | Posable; rebuilds as sea serpent or phoenix |
Sizes describe the finished models as Kawada and Lego state them, not the boxes. Kawada's level and Lego's age mark measure different things, as the section on difficulty explains.
Two separate systems that do not connect
Nanoblock is a separate building hobby that Kawada has made since 2008. The smallest block measures 4 × 4 x 5 mm, and Kawada says these small parts allow delicate, pixel-art-like detail. Neither Kawada nor Lego presents the two systems as connectable, so treat them as separate collections.
You can display them side by side: a Nanoblock Notre-Dame can stand next to a Lego Paris frame, but neither builds into the other. Accessories split the same way. For placing and removing blocks, Kawada recommends its NB-019 tweezers, and it also makes the NB-026 LED plate for lighting. Both are separate Nanoblock-only accessories.
Two notes from Kawada help before you start. The blocks are packed in several bags for production reasons, not in build order, so one step can need pieces from different bags. Instructions carry English alongside Japanese, and Kawada posts PDF instructions on the product pages of current kits.
Nanoblock difficulty levels are not age marks
Every Nanoblock kit carries a difficulty level from 1 to 5. Kawada's catalogue recommends level 1 for beginners, levels 2 and 3 for intermediate builders, level 4 for advanced builders and level 5 for experts. All three Nanoblock kits in this guide sit at level 4.
Lego prints an age mark instead: 18+ on both Architecture sets and 9+ on the Creator 3in1 dragon. The two scales answer different questions. Kawada's level ranks how demanding a kit is within the Nanoblock range, while Lego's mark names the age group a set is designed for. Neither converts into the other.
Nanoblock age marks also vary by market. In Japan, Kawada lists 12+ for all three kits, and Bandai, Kawada's European distributor, recommends NB-057 and NBM-032 from age 12. US listings can show a different age, so go by the mark on the box you receive.
Eiffel Tower: a 35 cm Nanoblock tower or a framed Lego skyline
Nanoblock Paris, Banks of the Seine Deluxe Edition NB-057: a free-standing Eiffel Tower
- Pieces: 2,500
- Finished size: 16 × 35 × 20 cm (W × H × D)
- Difficulty and age: level 4 of 5; 12+ from Kawada and its European distributor
- Details: three aircraft trailing tricolour smoke around the tower
The name refers to the banks of the Seine, but the subject is the Eiffel Tower, and listings often call the kit Eiffel Tower Deluxe. The colour scheme follows the tower's repainting, and three aircraft fly around it trailing tricolour smoke.
With 2,500 pieces at level 4, this is the largest Nanoblock project in this guide. The finished tower is about 35 cm tall on a 16 × 20 cm footprint, so it needs real shelf depth and clear height. It suits patient builders who want the tower itself as a centrepiece.
Lego Architecture Paris – City of Love 21064: a Paris skyline for the wall
- Pieces: 958
- Age: 18 and up
- Framed skyline to hang or stand
This set puts four landmarks into one picture: the Eiffel Tower, Notre-Dame de Paris, the Arc de Triomphe and the Louvre. They stand in front of a starlit city background inside a white brick frame, and a decorated City of Love brick attaches to the front.
The finished set is over 30 cm high, with the Eiffel Tower rising above the frame, 27 cm wide and only 5 cm deep. It can stand on a shelf or hang on a wall. On the wall it needs no shelf space at all, which helps when your shelves are already full.
Tower or frame: which Paris model fits?
Let depth and wall space decide first. The two models are of similar height. NB-057 needs a shelf at least 20 cm deep with 35 cm of clear height, while 21064 needs 27 cm of wall or a shelf 5 cm deep.
Then choose the subject. NB-057 puts 2,500 pieces into one landmark, so it suits you if the Eiffel Tower is what you love. The Lego frame spreads 958 pieces over four landmarks and a city background for a view of Paris as a whole. Nanoblock pieces are far smaller, so the counts say little about effort. Kawada rates NB-057 at level 4, for advanced builders, while 21064 carries Lego's 18+ mark.
Notre-Dame: a compact Nanoblock model or a Lego cathedral you can open
Nanoblock Notre Dame Cathedral NBH_205: Notre-Dame for a desk or narrow shelf
- Pieces: 1,040
- Finished size: 8 × 9.2 × 16 cm (W × H × D)
- Difficulty and age: level 4 of 5; 12+ in Japan (Kawada)
- Details: upgraded re-release with special parts for fine detail
Kawada re-released its Notre-Dame in an upgraded shape and size. Special parts at key points carry the fine detail, and the finished cathedral is just 8 cm wide, 9.2 cm high and 16 cm deep.
That makes NBH_205 the most compact model in this guide, yet 1,040 pieces at level 4 still add up to a demanding build. Kawada describes no interior or removable sections. Pick it if you collect landmarks and are short on space.
Lego Architecture Notre-Dame de Paris 21061: lift the roof and look inside
- Pieces: 4,383
- Age: 18 and up
- Removable roof and lift-off towers
The Lego set is the large-format version: 4,383 pieces in a model 33 cm high, 22 cm wide and 41 cm deep. You get rose windows, a roof that lifts off to show the interior columns and arches, and towers that come off for a closer look inside.
The building sequence follows the real cathedral, from the curved rear to the spire. The booklet adds the Notre-Dame story and an interview with the Lego designer, and the Lego Builder app has the instructions too.
Compact or open: which Notre-Dame suits you?
Start with the footprint. NBH_205 covers 8 × 16 cm and 21061 covers 22 × 41 cm, so the Nanoblock model needs about a seventh of the shelf area. The Lego cathedral is also more than three times as tall.
The Lego set is built to open up, and its build follows the real cathedral, so it makes the stronger centrepiece for an architecture fan. The Nanoblock model fits where the Lego one cannot, on a desk or a crowded shelf. NBH_205 is a level 4 kit; 21061 carries Lego's 18+ mark and has more than four times the pieces.
Dragon: a Nanoblock display figure or a posable Lego 3in1
Nanoblock Dragon NBM-032: a dragon sculpture for the desk
- Pieces: 960 (Kawada's count)
- Finished size: 17 × 12 × 17 cm (W × H × D)
- Difficulty and age: level 4 of 5; 12+ from Kawada and its European distributor
- Details: stands on its own legs; no posable joints described
Many special parts give Kawada's dragon its dynamic pose, and the finished figure stands on its own legs. It is 17 cm wide, 12 cm high and 17 cm deep. In Europe it is also called Dragon Deluxe.
The pose you build is the pose it keeps, because Kawada describes no posable joints. At 960 pieces and level 4, the dragon suits builders who enjoy detailed work and want a fantasy figure on a desk or bookshelf.
Lego Creator 3in1 Medieval Dragon 31161: pose it, then rebuild it
- Pieces: 715
- Age: 9 and up
- Posable 3in1: dragon, sea serpent or phoenix
As a Creator 3in1 set, 31161 uses the same 715 pieces for a dragon, a sea serpent or a phoenix, one at a time. All three creatures have posable body parts, and the phoenix comes with a brick-built stand.
The dragon measures 13 cm high, 39 cm long and 52 cm wide. After play it can stand on a shelf or bedside table. Only one creature exists at a time, so switching means taking the current model apart.
Sculpture or posable toy: which dragon to pick?
Age and use decide this pair. 31161 carries a 9+ mark and is designed for posing and rebuilding, which makes it the natural pick for a child. NBM-032 is a level 4 kit that Kawada and its European distributor recommend from 12, and it keeps the pose you build.
Space points the same way. The Nanoblock dragon covers about 17 × 17 cm, while the Lego dragon spreads to 52 × 39 cm. Pick Lego for play and Nanoblock for a compact sculpture.
Buying tips: model numbers, sellers and piece counts
Search for the Nanoblock kits by model number, because names vary between listings, and compare the seller, delivery time and delivered total before you order.
Trust Kawada for piece counts, since some listings for NBM-032 show a lower count than Kawada's 960. Box size is no guide to the finished model either: NB-057 comes in a 42 × 21 × 7 cm package but builds a tower 35 cm tall.
Nanoblock or Lego: which should you choose?
- Little space, lots of detail: Nanoblock NBH_205, the most compact model here.
- A tall Eiffel Tower as a centrepiece: Nanoblock NB-057, for a 2,500-piece level 4 build.
- Paris on the wall: Lego Architecture 21064, only 5 cm deep.
- A landmark you can open up: Lego Architecture 21061.
- A child aged 9 or older: Lego Creator 3in1 31161, posable and rebuildable.
- A dragon sculpture for a desk: Nanoblock NBM-032, recommended from 12 by Kawada.
To look beyond these two systems, our guide to Lego alternatives covers the wider market, and Lego Architecture alternatives compares other architecture display sets. Castle fans can compare display models in castle building-brick alternatives, and K'NEX vs Lego Technic looks at another system built on a different principle.
