Scanning the directories and files of the website

if you do not have access to the server — 99% no (or only Robin)

Of course. That can be yourself with your own hands start: dirb, DirBuster, Sublist3r, dirsearch. The difference between them is not so much important what is the dictionary for brute force to use.
Of online options can you recommend a URL Fuzzer or METASCAN, they have dictionaries already built in.

Within the links on this website you can get a good copy using the Teleport or the like.

www.owasp.org/index.php/Category:OWASP_DirBuster_Project

the physical folders and files on the server? in the General case — no. Because it's easy to close the access to existing folders and files and make virtual.
Virtual that make up the structure of the url to wget and similar.