Mariental Carpet
I decided to make a really big flying carpet.  I decided on a classic Mario Brothers theme.  The sun medallion in the center is sixteen meters high.
The block of glass I'm standing on obstructs the view of the central medallion. 

 
Limited render distance. 

Under the carpet, there be monsters.

I took this shot standing in a bubble under the sea.  Mustardayonnaise's amazing frigate shows here.

This one is made of jungle trees, cocoa pods, and glowstone.  The minarets and domes are topped with dragons' eggs.

My dog Daisy, standing on the fringe of the carpet (which you can see to the left above) with Al Oscar Mosque and Mustardayonnaise's gorgeous frigate in the background.

Speaking of Mustardayonnaise...

Here are some shots of Mustardayonnaise's astounding builds.

  Mustard's Planet Express

Mustard's Frigate

Steamer's Dragonfly

Flairerker made this nice video:

Some of my early builds:

Heaven 

j

The Sod Majal

Giant Robot takes a bubble bath.

 The Rocket 

 Mustardayonnaise brought me to Muttsworld in the first place. You can see his Kingdom of Loathing stick figure sculpture here.  In the northeast, one of ElCad's cool builds stands watch.

This was my first big wool project.  I first had to raise a flock of multicolored sheep, colored with dyes made of flowers, bone, lapiz lazuli, cactus, and such.

Sod Majal.  It survives on the colossal  Muttsworld 1.8 archive graciously released by Mumblerit.  You can download it from the Muttsworld website--if you have 21GB of free memory on your C drive.

Giant Robot! 

I built Giant Robot in Muttsworld's survival server before the big reset. He's based on one of Hollywood's great character actors, Robby the Robot.  The light in his chest console oscillates Cylon/Knight Rider fashion.  There's a lovely garden in his posterior cavity, four water elevators in his head, and a Piston Parkour platform game in his right leg.

The observation platform for Giant Robot is a flying saucer with rotating lights (using a minecart on a track with detector rail to trigger the lights).  El Cad visits in the foreground.