Shanghai is a city where contrasting timelines meet at every corner. Once a small fishing village along the Huangpu River, it grew rapidly during the 19th century into a major trading port. Today, its skyline tells a story of that transformation. On one side, the Bund’s colonial-era buildings stand tall in limestone and granite; on the other, the futuristic towers of Pudong, like the Shanghai Tower and Jin Mao, stretch into the clouds.

Hidden in the northern region of Costa Rica, the Celeste River (Río Celeste) winds through Tenorio Volcano National Park with a color so vivid it seems unreal. The river’s striking turquoise hue is caused by a natural chemical reaction between two mineral-rich streams, Quebrada Agria and Río Buena Vista, which merge at a point known as "El Teñidero." This one-of-a-kind phenomenon creates the illusion that the water has been dyed blue, even though no pigments are present.

Pompeii, Italy, is a mesmerizing time capsule that invites travelers to step back into the world of ancient Rome. Once a thriving city, Pompeii was abruptly buried under volcanic ash and pumice following the catastrophic eruption of Mount Vesuvius in 79 AD. This tragic event preserved the city in remarkable detail, allowing visitors today to walk the cobbled streets and witness a snapshot of Roman life, from grand villas and bathhouses to bakeries and amphitheaters.

Katakolon, also known as Katakolo, is a charmingly small port and fishing town on the coast of Greece. A primary entryway to the nearby ancient ruins of Archaia Olympia, Katakolon is a popular stop on many Mediterranean cruises. Before heading to Olympia, be sure to unwind on the warm Grecian sands of Paralia Katakolo or savor a bite of fresh seafood at one of Katakolon’s quaint cafés.

Nestled on the southern shore of the Firth of Forth, South Queensferry is a picturesque town in Scotland that offers a delightful blend of historical charm and stunning natural beauty.