3 Best Sights in Southeast Nevada, Nevada

Originally referred to as Boulder Dam, this colossal structure, widely considered one of the greatest engineering achievements in history, was later officially named Hoover Dam in recognition of President Herbert Hoover's role in the project. Look for artist Oskar Hansen's plaza sculptures, which include the 30-foot-tall Winged Figures of the Republic (the statues and terrazzo floor patterns were copied at the Smith Center for the Performing Arts in Downtown Las Vegas).

The tour itself is a tradition that dates back to 1937, and you can still see the old box office on top of the dam. But now the ticketed tours originate in the modern visitor center (or online), with two options. The cheaper, more popular one is the Powerplant Tour, which starts every 15 minutes. It's a half-hour, guided tour that includes a short film and then a 537-foot elevator ride to two points of interest: the chance to stand on top of one of the 30-foot pipes where you can hear and feel the water rushing through to the generators, and the more impressive eight-story room housing still-functional power generators. Self-paced exhibits follow the guided portion, with good interactive museum exhibits and a great indoor/outdoor patio view of the dam from the river side. The more extensive Hoover Dam Tour includes everything on the Powerplant Tour but limits the group size to 20 and spends more time inside the dam, including a peek through the air vents. Tours run from 9 to 5 all year, with the last Powerplant tour leaving at 3:45 pm daily, and the last Hoover Dam Tour at 3:30. Visitors for both tours submit to security screening comparable to an airport. January and February are the slowest months, and mornings generally are less busy. The top of the dam is open to pedestrians and vehicles, but you have to remain in your vehicle after sundown. Visitors can still drive over the dam for sightseeing, but cannot continue into Arizona; you have to turn around and come back after the road dead-ends at a scenic lookout (with a snack bar and store) on the Arizona side.

The dam's High Scaler Café offers fare such as cold drinks, ice cream, and hamburgers.

Sin City's refuge for hikers, naturalist, skiers, campers and just about anyone who wants to escape the desert valley for the forest, Mt. Charleston is the highest peak in Clark County and it offers year-round outdoor recreation. Trails include a difficult hike to Mt. Charleston peak, the range's high point. Easier trails lead to seasonal waterfalls or rare, dripping springs where dainty columbine and stunted aspens spill down ravines and hummingbirds zoom. Or they might lead onto high, dry ridges where ancient bristlecone trees have become twisted and burnished with age.

Valley of Fire's jumbled rock formations are remnants of hardened sand dunes more than 150 million years old. You find petrified trees and one of the park's most photographed features—Elephant Rock—just steps off the main road. Mysterious petroglyphs (carvings etched into the rocks) are believed to be the work of the Basketmaker and early Puebloan people, with their occupation in the area estimated from 300 BC to AD 1150. The easy, essential trail is Mouse's Tank, named for an outlaw who hid out here and managed to find water; so will you in cooler months (but not for drinking). It's a short walk with views of petroglyphs and shaded by steep canyon walls. Sci-fi fans also might recognize Fire Canyon as the alien planet in Starship Troopers and several other movies.

The Valley of Fire Visitor Center was remodeled in 2011 and has displays on the park's history, ecology, archaeology, and recreation, as well as slide shows and films, and information about the two campgrounds (72 campsites, 20 of them with power and water for RVs) within the park. Campsites at Atlatl Rock and Arch Rock Campgrounds are available on a first-come, first-served basis. The park is open year-round; the best times to visit, especially during the heat of summer, are sunrise and sunset, when the light is truly spectacular.