Collocations for accessible - adj.

be
become
remain
make sth

highly, very
a very accessible account of Korean history

directly, easily, freely, immediately, readily
It is written in simple language, immediately accessible to the reader.

widely
publicly
universally
instantly
fully

by
The museum is easily accessible by public transport. (BrE)
The museum is easily accessible by public transportation. (AmE)

for
All the buildings are accessible for people in wheelchairs.

to
The beach should be accessible to everyone.
The cartoon strips are designed to make Shakespeare accessible to children.

Accessible is used with these nouns:
introduction, route