Started with the boats cos they seemed the most fun.
The boathouse - used to hold Viking Ships, built back from waterline with wood. Each holds one ship.
Quote from RobertFrans
Make a full functional monastery, for let's say hunderd villagers. The monastery contains:
Chapel, maybe dedicated to Notch?
Sacristy by the chapel
Individual cells for sleeping and study
Assembly, where they have there regular meetings
Rectory, thus the dining room
Scriptorium, where they copy books
Library, maybe with enchantment room
Smithy with lava, anvils and ovens
Working room for carpentry and working with stone
Quest rooms, where they can recieve quests
Portal, for the gate keeper
Fields and gardens for all the crops, at least sugar canes for the paper
Fields and stables for all the passive mobs, at least cows for the books
A squid basin for the inc
Cloister around the garden in the centre of the monastery
Graveyard with some graves
Some mysterious secret rooms...
You can look for a map of a real monastery, like this one.
I hope this suggestion inspires you.