The tomb of the Mughal emperor Humayun, an early example of Mughal garden tomb architecture, is located in which Indian city?

Introduction / Context:
The Mughal dynasty left behind many grand architectural monuments in the Indian subcontinent. The tomb of Humayun, the second Mughal emperor, is particularly significant because it represents one of the earliest examples of a large Mughal garden tomb and influenced later monuments such as the Taj Mahal. General knowledge and history questions often ask in which city this important tomb is located to link major monuments with their urban settings.

Given Data / Assumptions:

The monument under discussion is the tomb of the Mughal emperor Humayun.
The options given are Hyderabad, New Delhi, Mumbai, and Kolkata.
We must identify the city where this tomb stands today.
We assume modern city names and current geographical locations of historical sites.

Concept / Approach:
Humayun's tomb is located in New Delhi and is a UNESCO World Heritage Site. It is noted for its charbagh garden layout, Persian influenced design, and use of red sandstone and white stone. Although the Mughals built monuments in many parts of the subcontinent, this particular tomb stands in the capital region. Hyderabad, Mumbai, and Kolkata each have their own important historical landmarks, but none of them host the tomb of Humayun.

Step-by-Step Solution:
Step 1: Recall that the tomb of Humayun is often visited as part of historical tours of Delhi. Step 2: Note that guidebooks and heritage lists place it among the main attractions of New Delhi, along with monuments such as the Red Fort and Qutub Minar. Step 3: Compare this with Hyderabad, which is known for Charminar and Golconda Fort, not for Humayun's tomb. Step 4: Recognise that Mumbai and Kolkata, though important cities, are not historically linked with the construction of this particular Mughal tomb. Step 5: Conclude that New Delhi is the correct city where Humayun's tomb is located.

Verification / Alternative check:
Verification can be done by recalling the typical list of World Heritage Sites in Delhi, which includes the Red Fort complex, Qutub Minar complex, and the tomb of Humayun. Maps of Delhi tourist circuits clearly mark this tomb near Nizamuddin. No such connection exists between Humayun and the core historic sites of Hyderabad, Mumbai, or Kolkata, which strengthens the conclusion that New Delhi is the correct answer.

Why Other Options Are Wrong:
Hyderabad is wrong because its famous heritage structures belong mainly to the Deccan sultanates and the Nizam period, such as Charminar and Mecca Masjid, not the early Mughal emperors. Mumbai is wrong because it is known for colonial era architecture and modern commercial landmarks rather than a Mughal garden tomb of Humayun. Kolkata is wrong because it was the capital of British India at one point and features colonial buildings, not the tomb of a Mughal emperor. None of these cities fit the description of the location of Humayun's tomb.

Common Pitfalls:
Some learners may confuse Humayun's tomb with the Taj Mahal and think of Agra, or may assume that because the Mughals ruled from various cities, the tomb might be elsewhere. Another pitfall is to guess Mumbai or Kolkata simply because they are large and well known. To avoid such errors, it is useful to make a list of Mughal monuments and their locations, such as Humayun's tomb in New Delhi and the Taj Mahal in Agra.

Final Answer:
The tomb of the Mughal emperor Humayun is located in New Delhi.