The Visible Human project at the US National Institutes of Health (NIH). Click on the banner to visit the site
The Downstate Medical Center of SUNY (State Universrity of New York) has a website with photographs of brain sections, and histological sections. Click on the banner to visit the site
Another, very detailed website is 'Atlas of the Human Brain" of the Human Brain Network, an Elsevier Science project featuring a highly detailed interactive sectional atlas of the human brain. Click on the image to visit the site.