Photos: The design for a new Sandy Hook Elementary School

The lobby of the new Sandy Hook Elementary School, with embedded surveillance cameras. The $50-million new school, built on the site of 2014 shootings, is welcoming its first students.

Acknowledgments of the Sandy Hook Elementary School, past and present.

The central lobby of the new Sandy Hook Elementary School opens up -- through a two-story glass wall -- to views of trees beyond the back of the property.

A playground bench at the new Sandy Hook Elementary School.

A collection of mementos in a Sandy Hook classroom.

Colored blinds screen windows at the new Sandy Hook Elementary School in Newtown, Conn.

Playground swings at the new Sandy Hook Elementary School.

A classroom in the new Sandy Hook Elementary School.

The front of the new Sandy Hook Elementary School in Newtown, Conn.

A mosaic in the new Sandy Hook Elementary School. Members of the media tour the building.

At the new Sandy Hook Elementary School, Steve Flick, project superintendent with Consigli Construction Co., and Julia McFadden, architectual project manager with Svigals + Partners, show members of the media a new classroom.

Students will enter the Sandy Hook school by crossing one of three short footbridges spanning a bioswale, a garden designed to filter rainwater.

The old Sandy Hook Elementary School before it was razed.

In this Oct. 28, 2013, aerial file photo, workers use backhoes to remove rubble during the demolition of Sandy Hook Elementary School in Newtown, Conn.

The pickup/dropoff area at the front of the new Sandy Hook Elementary School in Newtown, Conn.