Moss 2007 to sharepoint 2013 sites migration

Hi,

I am working on SharePoint sites migration from Moss 2007 to SharePoint 2013 environment.

We are using the database attach and detach methodology.

I am able to upgrade the site collections form Moss 2007 to SP 2010 environment by upgrading the databases. and i am able to access the site collections with sp 2010 UI look.

Next step is to move these site collections to SP 2013 environment, can you please let me know before moving content databases to sp 2013 environment do i need to visual upgrade all site collections in MOSS 2010 environment.

Let me know do i need to do any extra steps in MOSS 2010 befor moving content dbs to sp 2013

Regards,

Patil