Aqueduct-fed rococo fountain, designed by Nicola Salvi & completed in 1762, with sculpted figures.

Monumental 3-tiered Roman amphitheater once used for gladiatorial games, with guided tour option.

Gustave Eiffel's iconic, wrought-iron 1889 tower, with steps and elevators to observation decks.

Grand, Indo-Saracenic-style, 26m-tall triumphal stone arch, built on the waterfront in 1924.

Imposing triumphal arch commemorating the Indian soldiers killed in the First World War.

Iconic temple built circa 118 to 125 A.D. with a dome & Renaissance tombs, including Raphael's.

Fantastical, curving dragon-roofed apartment block, now a museum, created by architect Antoni Gaudi.

Elegant square dating from the 1st century A.D., with a baroque fountain, street artists & bars.

Restored 14th-century tower and former prison overlooking the Bosphorus with a top-floor restaurant.

Central worship place for Sikhs around the world, built from white marble overlaid with gold leaf.

Cafes & restaurants line the arches of this stately square with Philip III's statue in the center.

Famous complex that's home to TV studios, plus a seasonal ice rink & a giant Christmas tree.

Visitors can tour the palace's opulent private and state rooms or watch the changing of the guard.

Landmark square with a large water feature, seats with painted ceramic tiles & an ornate pavilion.

Restored 18th-century gate & landmark with 12 Doric columns topped by a classical goddess statue.

Large medieval town square, dating to the 13th century, surrounded by palaces & churches.

Revered Catholic church & pilgrimage site housing a cloak with the image of the Virgin of Guadalupe.

18th-century summer palace with tours of lavish rococo ceremonial rooms, plus gardens with a maze.

Unveiled in 1936, this landmark obelisk made from Cordoba white stone is a popular meeting place.

Well-preserved, Roman amphitheater, built to seat 20,000 people, hosting summer opera program.

Fortified hilltop castle, initiated in the 14th century & prettified in a variety of later styles.

Circa-1916 covered market offering local food, delicacies & events in an elegant ambiance.

Public park, created in 1937, with sculptures & a central fountain featuring 20 water jets.

Ruins of iconic 5th-century B.C. temple complex on Athens' rocky hilltop undergoing restoration.

Capital of a kingdom that flourished from the 14th to 16th century, with 87 semi-circular bastions.

Colonnaded tomb for the former president, Kemal Ataturk, with a marble hall, turrets & museum.

City square named after 1810 revolution that took place here, leading to Argentina's independence.

Cathedral-flanked square with iconic historic, religious & artistic landmarks & museums.

Nelson's Column rises above this iconic square's LED-lit fountains, artworks and lion statues.

Washington Monument plus memorials to Lincoln, MLK, FDR, WWII & Vietnam vets along a grassy mall.

1161 complex & revered pilgrimage destination, with a main temple & 30 smaller surrounding ones.

Archaeological site with excavated ruins of the large Maya city, including an iconic step pyramid.

Peshwa palace fort built in the 1740s, with a main gate big enough to let elephants pass through.

Storied seaside destination showcasing a range of shops & cafes, plus an amusement park & aquarium.

Iconic, storied mosque set within a vast, domed former Byzantine church with stained-glass windows.

18th-century, ridge-top palace for state occasions, plus tours with rooms full of art and antiques.

Waterside public plaza with a notable arch & statue, lined with outdoor cafes & shopping venues.

Iconic, art deco office tower from 1931 with exhibits & observatories on the 86th & 102nd floors.

Grand, landmark square centered by Rome's oldest obelisk & the site of the city's northern gate.

Well-known obelisk built to commemorate Indonesian independence from the Netherlands.

Towering Roman aqueduct & grand landmark monument, constructed with 2 tiers and 167 arches.

Turreted, 19th-century, hilltop castle built for King Ludwig II, with tours of furnished rooms.

Landmark medieval fortified tower on tiny river island with rooftop terrace offering estuary views.

Gaudi's Catalan art nouveau period building with quarrylike facade, hosting exhibitions & concerts.

Built in 1754 AD, this bustling Hindu temple provides traditional rituals, feasts & ceremonies.

Iconic National Monument opened in 1886, offering guided tours & a museum, plus harbor & city views.

Famed archaeological site featuring the Great Pyramids, the Great Sphinx & other well-known ruins.

An 11th-century castle and barracks housing the Crown Jewels and National War Museum of Scotland.

Circular, 2nd-century castle housing furniture & paintings collections in Renaissance apartments.

Expansive, 9th-century Hindu temple complex featuring structures with stone spires & sculptures.