First, you have to see the video,
The ‘dragon’ and the ‘spider’ have sprung forth from a French street theatre group known as La Machine and the La Machine ‘experience’ is making its début in North America in Ottawa, Ontario (July 27 – 30, 2017) as part of Canada’s 150th celebration.
Here’s more about La Machine and the ‘experience’ from the city of Ottawa’s event page,
Making its debut in North America, La Machine will captivate the public with its travelling urban theatre in the streets of downtown Ottawa.
Wandering around in public spaces, the protagonists will invade the heart of the capital in a show entitled “The Spirit of the Dragon-Horse, With Stolen Wings”. They will live among us for 24 hours a day over the course of four days as they pursue their quest and fulfill their destiny.
Part dragon and part horse, LongMa stands 12 metres high, 5 metres wide and weighs 45 tons. Although his body is made of wood and steel, we quickly fall under his spell and connect with him on an ethereal level. From the top of his hooves, he trots with elegance, gallops, rears himself up and lies down.
With his piercing gaze, LongMa scours the crowd and interacts with them thanks as his neck rises, lowers and oscillates from left to right. His ribcage swells under the pressure of his lungs. But be careful, the warm breath coming out of his nostrils could quickly be transformed into fire coming out of his mouth.
Beautiful and repulsive, aggressive and gentle, the giant spider will give you chills. Her eight legs and body that synchronize as she crawls around town gracefully. Like a dancer, she wanders, steps over trees, streetlights and bus shelters… At rest, she is 5.7 metres high and 6 metres wide, but she can reach up to 13 metres when in motion. Fully outstretched, she is about 20 metres long.
Will she extinguish LongMa’s flames with the water deployed from her abdomen?
About La Machine Company
La Machine is a street theatre company founded in 1999 and leaded by François Delarozière. Its conception is thanks to artists, technicians and theatre designers working together for the construction of unusual theatre objects. Today, La Machine develops many projects in the field of urban development as well as for street theatre. At the heart of La Machine’s artistic approach, movement is read as a language, as a source of emotion. Through each of these living architectures, the idea is to dream of tomorrow’s cities, and thanks to this, transform the way we look at our towns. To bring its creations to life, La Machine has set up two workshops, one in Nantes and one in Tournefeuille. They bring together many different trades and crafts from theatre and the arts, to industry and advanced technology. People and their skills are the very essence of the creative process.
Ottawa and La Machine
I think this Ottawa event is much more engaging than Toronto’s giant rubber duck (which has proved to be controversial( e.g. June ?, 2017 posting on blogTO and Alina Bykova’s June 30, 3017 article for thestar.com) on July 1, 2017. Getting back to Ottawa, Judy Trinh’s June 1, 2016 article for CBC (Canadian Broadcasting Corporation) news online previews and provides some inside scoop about the 2017 event (Note: A link has been removed),
A giant mechanical dragon and spider from France will roam the streets of Ottawa next summer as part of celebrations for Canada’s 150th birthday.
It will be the first time the fire-breathing and water spraying creatures invade North America.
Securing the performance of the monsters from La Machine, a production company based in Nantes, France comes at a cost of $3 million — an amount that will be shared by both the public and private sector.
The Ottawa 2017 organizing committee has been working on booking the show for nearly a year and a half.
Negotiations didn’t just involve the City of Ottawa and the French production company. It also involved a Chinese businessman — Adam Yu, an entrepreneur based in Beijing who owns the rights to the dragon for La Machine.
Laflamme [executive director of Ottawa 2017, Guy Laflamme] said mayor Jim Watson set aside time during his economic mission to China to meet with Yu and make the case for loaning the dragon to Ottawa.
Organizers have just started “storyboarding” the show with La Machine’s artistic director, François Delarozière.
Although he’s reticent to describe what the show will look like, Laflamme does provide some hints: the operators will be dressed like they stepped out of the movie, The Matrix [movi e description], and the giant robots will make stops at Ottawa landmarks and interact with spectators.
Local musicians will also be hired to form a travelling orchestra for the soundtrack to the dragon’s and spider’s adventures.
If I read that rightly, planning seems to have started in 2014.
Canada Aviation and Space Museum
While La Machine is in Ottawa with their mechanicals, there will be a preview (from an Ingenium [formerly Canada Science and Technology Museums Corporation] July 12, 2017 notice received via email), Note: Links have been removed,
EXCLUSIVE SNEAK PEEK
Presented as part of Ottawa 2017
Making its debut in North America, _La Machine_ will captivate the
public with its dramatic urban theatre experience – and you can get
exclusive access at the Canada Aviation and Space Museum!
From July 15 to 24 [2017; emphasis mine], the Museum will be hosting a variety of
larger-than-life activities leading up to the big performance.
Activities include special viewing areas, a mini exhibition about _La
Machine_, a film about Long Ma the Dragon-Horse, creative activities and
a special lecture with _La Machine_’s creator. All activities are FREE
with Museum admission. Find out more by visiting our website. 
THE MAKING OF_ LA MACHINE_ WITH FRANÇOIS DELAROZIÈRE
Join François Delarozière, the visionary artistic director and
engineer behind the wonders of _La Machine_, for an afternoon of insight
and conversation exploring the street theatre company’s history and
the creative process behind its fantastical mechanical masterpieces.
Saturday, July 15, 2017
2 p.m. to 3 p.m.
Canada Aviation and Space Museum
Mauril Bélanger Theatre
SPACE IS LIMITED, REGISTER HERE! 
UN AVANT-GOÛT EXCLUSIF
Présenté dans le cadre d’Ottawa 2017
Pour la première fois en Amérique du Nord,_ La Machine_ s’apprête
à captiver le public avec son impressionnant théâtre urbain. De plus,
vous aurez droit à un accès exclusif au Musée de l’aviation et de
l’espace du Canada!
Du 15 au 24 juillet, le Musée tiendra une série d’activités hors du
commun dans l’attente de la grande représentation. On y comptera des
projections spéciales; une mini-exposition sur _La Machine_; un film
racontant l’histoire de Long Ma, le cheval-dragon; des activités
créatives et une conférence spéciale en compagnie du créateur de _La
Machine_. Tous les activités sont comprises dans le prix d’entrée au
Musée. Visitez notre site Web  pour obtenir plus de renseignements.
LA RÉALISATION DE _LA MACHINE_ AVEC FRANÇOIS DELAROZIÈRE
Venez échanger avec François Delarozière, directeur artistique de _La
Machine_ et concepteur visionnaire de ces merveilles mécaniques, et
découvrez l’histoire de cette compagnie de théâtre de rue et le
processus ayant mené à la création de ses fantastiques
chefs-d’œuvre mécaniques. (Présentation bilingue)
Samedi 15 juillet 2017
De 14 h à 15 h
Musée de l’aviation et de l’espace du Canada
Théâtre Mauril Bélanger
INSCRIVEZ-VOUS ICI – LE NOMBRE DE PLACES EST LIMITÉ! 
You can sign up for the talk with François Delarozière here. It is a bilingual presentation included with the entrance fee (as noted previously) to the museum entitling you to a seat assuming you sign up quickly.
For the curious, you can find more about La Machine at its website. The images on the banner are stunning.