The Loire Valley stretches along the gentle curves of France’s longest river, a place where riverside towns, historic estates and vineyards have shaped daily life for centuries. This long stretch of landscape was recognized as a UNESCO World Heritage Site because of its remarkable cultural landscape, which includes towns like Tours, Blois, Amboise and Saumur and a tapestry of castles standing beside the river banks.

Ol Doinyo Lengai, often called the "Mountain of God," is an active volcano located in northern Tanzania and is a must-visit for adventurous travelers. Towering over the Great Rift Valley, this majestic peak is unique due to its lava composition. Unlike most volcanoes that produce molten lava, Ol Doinyo Lengai emits natrocarbonatite lava, which is unusually cool and flows like water. This rare phenomenon makes it one of the most intriguing volcanic landscapes on Earth.

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).

The Kanmon Straits are a narrow waterway in Japan that separates the island of Honshu from Kyushu and connects the Sea of Japan with the Seto Inland Sea.

A series of gates surrounds the two centers of ancient, medieval Fez (sometimes spelled Fes). The principal axes link the center to the gates and a street surrounds the heart of the old city. The Kairouan quarter, which is longer, is crossed by an artery. Narrow, tortuous pedestrian streets, covered passages, stairs and numerous dead-ends make up the dense layout with few urban squares.