50 bang, những cung đường huyền thoại và đa dạng vô tận
Thủ đô
Washington, D.C.
Ngôn ngữ
English
Tiền tệ
US Dollar (USD)
Thời điểm tốt nhất
Varies by region — spring and fall are ideal
An toàn
Trung bình (3/5)
Đánh giá lần cuối: March 26, 2026
Được tuyển chọn bởi Ouoba Travel Intelligence
Tôi có cần visa không?
ESTA (Electronic System for Travel Authorization) required for Visa Waiver Program countries (UK, Australia, most EU, Japan, etc.) for stays up to 90 days. Canadians enter visa-free. Many nationalities require a B1/B2 tourist visa.
Làm thế nào để xin visa?
ESTA: apply at esta.cbp.dhs.gov at least 72 hours before travel. Tourist visa (B1/B2): apply at US embassy with DS-160 form, interview, and supporting documents.
Mất bao lâu?
ESTA: usually approved within minutes to 72 hours. B1/B2 visa: weeks to months depending on embassy wait times.
US visa interviews can have months-long wait times — apply very early.
CBP officers at immigration can be intimidating — answer questions honestly and briefly.
Passport must be valid for 6 months beyond your stay.
Yêu cầu visa khác nhau theo quốc tịch và thay đổi thường xuyên. Xác minh với đại sứ quán của quốc gia bạn hoặc cơ quan xuất nhập cảnh chính thức của điểm đến trước khi du lịch.
Content on Ouoba is provided for general informational purposes only and does not constitute legal, immigration, visa, insurance, tax, medical, financial, safety, or other professional advice. Users should consult official authorities, qualified professionals, or service providers before making important travel, financial, legal, or health-related decisions.
An toàn đến mức nào?
3/5
Tourist areas in major cities are generally safe. Gun violence is a reality — mass shootings occur. Some urban neighborhoods have high crime. National parks and rural tourist areas are very safe. Healthcare is extremely expensive without insurance.
Cần đề phòng những trò lừa nào?
Ticket scalpers outside major attractions.
Fake homeless people with elaborate stories — common in NYC and LA.
Rental car damage charges — photograph everything.
Timeshare presentations disguised as free activities.
Cần phòng ngừa sức khỏe như thế nào?
Healthcare is excellent but EXTREMELY expensive. Travel insurance is absolutely essential — a hospital visit can cost thousands.
Pharmacies (CVS, Walgreens) are everywhere.
Tap water is safe in most areas.
Cần tiêm những vaccine nào?
Routine vaccines only. No special requirements.
Nước máy có uống được không?
Tap water is safe in most cities. Some rural areas and Flint, Michigan have had issues — check locally.
Có cảnh báo du lịch nào đang hiệu lực không?
Gun violence is a unique risk. Healthcare costs can be devastating without insurance. Driving distances are massive — the US is huge. Natural disasters vary by region (hurricanes, tornadoes, earthquakes, wildfires).
Thông tin an toàn dựa trên các khuyến cáo du lịch có sẵn công khai. Tham khảo dịch vụ khuyến cáo du lịch của chính phủ bạn để có hướng dẫn mới nhất.
Content on Ouoba is provided for general informational purposes only and does not constitute legal, immigration, visa, insurance, tax, medical, financial, safety, or other professional advice. Users should consult official authorities, qualified professionals, or service providers before making important travel, financial, legal, or health-related decisions.
Tôi nên biết gì về văn hóa?
Nên làm gì?
Road trip — the US is built for driving. Route 66, Pacific Coast Highway, Blue Ridge Parkway.
Visit national parks — Yellowstone, Grand Canyon, Yosemite, Zion are world-class.
Try regional food: BBQ in Texas, seafood in Maine, Tex-Mex, deep-dish pizza in Chicago.
Nên tránh gì?
Don't forget to tip — 18-20% at restaurants is expected, not optional.
Don't underestimate distances — LA to San Francisco is 6 hours driving.
Don't jaywalk in some cities — you can get fined.
Tiền boa tính thế nào?
Tipping is MANDATORY in practice. 18-20% at restaurants. $1-2 per drink at bars. 15-20% for taxis. $2-5 per night for hotel housekeeping. Not tipping is considered very rude.
Quy định trang phục ra sao?
Very casual. Americans dress down more than most countries. Jeans and sneakers are acceptable almost everywhere.
Bối cảnh tôn giáo thế nào?
Christian majority but extremely diverse. Every religion represented. Very secular in daily life in most cities. Bible Belt (South) is more conservative.
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