Whether you are in D.C. on business or vacation, you'll find that it's a fascinating city that is full of history, art, theatre, and dramatic monuments.

Bartolomé Island, one of the most iconic destinations in the Galápagos archipelago, is known for its dramatic volcanic landscape and the postcard-perfect view from its summit. Just off the east coast of Santiago Island, this uninhabited islet draws visitors for its unique terrain with lava flows, spatter cones, and a rust-colored cinder cone that rises sharply above the sea.

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.

Waikiki, located on the island of Oahu, is a world-renowned destination that perfectly captures the spirit of Hawaii. Known for its iconic crescent-shaped beach, warm turquoise waters, and vibrant nightlife, Waikiki is where Hawaiian royalty once surfed and relaxed, and it remains a hotspot for both relaxation and adventure today.

Guinea, located on the west coast of Africa, offers a rich blend of landscapes, cultures, and traditions that remain largely untouched by mass tourism. Its Atlantic shoreline is dotted with fishing villages and sandy beaches, while inland, rolling highlands and dense rainforests give way to sweeping savannas.