The Alamo, four more Spanish missions and the River Walk below street level.
A round fort of 1668, the Friday goat market and the date-palm oasis at the foot of Jebel Akhdar.
A bazaar city on the edge of the Lut desert, with the Ganjali Khan bathhouse and the Rayen citadel nearby.
The model city of parks and bus lanes, the glass Botanical Garden and the train to the coast.
The longest zipline in the world off Jebel Jais, mountains and quieter beaches than Dubai.
Walt Disney World, Universal and the theme-park capital of the world.
A Crusader sea castle, a soap museum in an old khan and the vaulted souks of a Phoenician port.
The Motown Museum, the Henry Ford, Art Deco skyscrapers and a comeback story.
The base for the ATM cave with its Maya skeletons, Xunantunich and jungle lodges.
The cloud forest reserve, resplendent quetzals and the first canopy ziplines.
The golden shrine of Imam Ali and Wadi al-Salam, the largest cemetery in the world.
The dhow-building yards, a lighthouse on the lagoon and the turtle beach at Ras al Jinz.
Balboa Park, the zoo, La Jolla sea lions and the best year-round weather in the country.
The Venice of the East on the Shatt al-Arab, date palms and the gateway to the Mesopotamian marshes.
The southern trading city, a Silk Road bazaar and the base for Aksu-Zhabagly nature reserve.
Hot springs and the Sea of Galilee, 200 metres below sea level, with Capernaum along the shore.
The Basilica of the Annunciation, the largest church in the Middle East, and an Arab old-town market.
Mission Control at the Johnson Space Center and the most diverse food scene in the country.
The Thursday and Sunday market, the biggest in Central America, and incense on the steps of Santo Tomas.
The black-sand surf village of the Surf City coast, named for the pig-shaped rock offshore.
Coral reefs on the Red Sea, the Underwater Observatory and the desert of Timna, at Israel's southern tip.
The Prophet's Mosque with its green dome, the second holiest city of Islam.
The Yukon capital: northern lights, the SS Klondike sternwheeler and the road to Dawson City.
The Pearl of the South: a French-founded city of neoclassical squares on a bay, and the Tomas Terry theatre.
The Phoenician city that invented purple dye, a Roman hippodrome and beaches on a peninsula.
The Gateway Arch, 192 metres of stainless steel over the Mississippi, and the free zoo in Forest Park.
The gateway to Manuel Antonio: sloths and capuchins on the beach in the smallest national park.
The cultural capital of Iraqi Kurdistan, the Amna Suraka prison museum and the Zagros mountains.
Temple Square, the Great Salt Lake and the greatest snow on Earth an hour up the canyons.
Music City: the Grand Ole Opry, honky-tonks on Broadway and hot chicken.
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