Using no scaffolding, bolts, rivets or other machine equipment, artist Sam Rodia spent nearly 35 years building the Watts Towers in Los Angeles, which are now a national historic landmark. The towers are made of mortar-covered steel, and covered with mosaics of broken glass, pottery and tile, as well as sea shells.

Parking and public transportation at the Watts Towers
There is a free parking lot, and it's also easy to reach the Watts Towers by light rail via the Metro Blue Line.

Best and worst time to go to the Watts Towers
The best time to visit the Watts Towers is in the late morning or early afternoon, to avoid getting stuck in heavy traffic. The worst time is August, when temperatures can rise into the 90s, or on rainy days, since no tours are provided.

Admission to the Watts Towers
There is no charge to view the Watts Towers from the street. A guided tour costs in the seven dollar range for adults, around three dollars for seniors and teens, and is free for children under 12.

Must see/do at the Watts Towers
Visitors really need to get up close to the Watts Towers to truly appreciate their artistry. The guided tour is well worth the modest fee since it allows access beyond the fence that surrounds them.

Other Places to visit near the Watts Towers
The adjacent Watts Towers Arts Center, which is also covered in mosaics, is home to three galleries that are open the same hours as the Watts Towers.

Insider tip for visitors to the Watts Towers
Although visitors might be hesitant about going to the Watts Towers because of their location in South Central L.A., there is little reason for concern during daytime hours.

Author's bio: Laura Goldman is a freelance writer and lifelong Angeleno. Follow her on Twitter and visit her blog, i Still Love Dogs.