The capital, 450-year-old Asuncion ("Mother of Cities") merits a visit of unhurried nights - that way, you'll have time to sit in the main square and people-watch. The shopping in this grand city of 729,000 is the finest the country offers, and the cathedral and archaeological museum are both highlights. The governmental architecture is interesting; don't miss the Congressional Palace, Customs House and Government Palace (in the style of the Louvre).

Saudi Arabia is revealing chapters long unseen by tourists. Al-Ula is home to Hegra, the first UNESCO World Heritage Site in the kingdom and hosts to ancient Nabatean tombs carved in sandstone cliffs. Nearby, the mirrored Maraya Concert Hall reflects the desert sky, its design both unexpected and elegant amid the sands. Visitors can wander through narrow canyons, step inside rock-hewn facades, and feel the weight of ancient civilizations still echoing across the dunes.

On the Canadian border where Lake Huron and Lake Superior meet, a canal built in 1895 still is used to have boats bypass the rapids of the St. Mary's river.

Písek, a picturesque city in the South Bohemian Region of the Czech Republic, is a hidden gem steeped in history and charm. One of its most notable landmarks is the Písek Stone Bridge, the oldest preserved bridge in the country. Built in the 13th century, this Gothic bridge spans the Otava River and is a testament to medieval engineering.

Half of the land on Sanibel island is designated as natural areas with two preserves protecting the island ecology and wildlife, while the other half offers resort and glistening beaches.